[llvm] [AMDGPU][MC] Disassembler warning for v_cmpx instructions (PR #127925)
Jun Wang via llvm-commits
llvm-commits at lists.llvm.org
Wed Feb 26 16:00:43 PST 2025
https://github.com/jwanggit86 updated https://github.com/llvm/llvm-project/pull/127925
>From 897cc8fddc4023f40d53c8400dea7ff30c80fbb7 Mon Sep 17 00:00:00 2001
From: Jun Wang <jwang86 at yahoo.com>
Date: Wed, 19 Feb 2025 16:24:19 -0800
Subject: [PATCH 1/3] [AMDGPU][MC] Disassembler warning for v_cmpx instructions
For GFX10+ the destnation reg of v_cmpx instructions is
implicitly EXEC, which is encoded as 0x7E. However, the
disassembler does not check this field, thus allowing any
value. With this patch, if the field is not 0x7E a warning
is issued.
---
.../Disassembler/AMDGPUDisassembler.cpp | 12 +-
.../Disassembler/AMDGPU/gfx10_vop3cx_warn.txt | 407 ++++++++++++++++++
2 files changed, 418 insertions(+), 1 deletion(-)
create mode 100644 llvm/test/MC/Disassembler/AMDGPU/gfx10_vop3cx_warn.txt
diff --git a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
index 308ab8e3b82c4..cd74ff5a34c42 100644
--- a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
+++ b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
@@ -663,6 +663,8 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
return MCDisassembler::Fail;
} while (false);
+ DecodeStatus Status = MCDisassembler::Success;
+
if (MCII->get(MI.getOpcode()).TSFlags & SIInstrFlags::DPP) {
if (isMacDPP(MI))
convertMacDPPInst(MI);
@@ -801,8 +803,16 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
if (ImmLitIdx != -1 && !IsSOPK)
convertFMAanyK(MI, ImmLitIdx);
+ if (isGFX10Plus() &&
+ (MCII->get(MI.getOpcode()).TSFlags & SIInstrFlags::VOP3) &&
+ MCII->get(MI.getOpcode()).hasImplicitDefOfPhysReg(AMDGPU::EXEC)) {
+ auto ExecEncoding = MRI.getEncodingValue(AMDGPU::EXEC_LO);
+ if (Bytes_[0] != ExecEncoding)
+ Status = MCDisassembler::SoftFail;
+ }
+
Size = MaxInstBytesNum - Bytes.size();
- return MCDisassembler::Success;
+ return Status;
}
void AMDGPUDisassembler::convertEXPInst(MCInst &MI) const {
diff --git a/llvm/test/MC/Disassembler/AMDGPU/gfx10_vop3cx_warn.txt b/llvm/test/MC/Disassembler/AMDGPU/gfx10_vop3cx_warn.txt
new file mode 100644
index 0000000000000..b8bf696cf9fd3
--- /dev/null
+++ b/llvm/test/MC/Disassembler/AMDGPU/gfx10_vop3cx_warn.txt
@@ -0,0 +1,407 @@
+# RUN: llvm-mc -triple=amdgcn -mcpu=gfx1010 -disassemble -show-encoding < %s 2>&1 | FileCheck -check-prefixes=GFX10 %s
+
+### class
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_class_f16_e64 v1, v2 ; encoding: [0x7e,0x00,0x9f,0xd4,0x01,0x05,0x02,0x00]
+0x00,0x00,0x9f,0xd4,0x01,0x05,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_class_f32_e64 v1, v2 ; encoding: [0x7e,0x00,0x98,0xd4,0x01,0x05,0x02,0x00]
+0x01,0x00,0x98,0xd4,0x01,0x05,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_class_f64_e64 s[4:5], v2 ; encoding: [0x7e,0x00,0xb8,0xd4,0x04,0x04,0x02,0x00]
+0x02,0x00,0xb8,0xd4,0x04,0x04,0x02,0x00
+
+### eq
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_f16_e64 0.5, v2 ; encoding: [0x7e,0x00,0xda,0xd4,0xf0,0x04,0x02,0x00]
+0x03,0x00,0xda,0xd4,0xf0,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x12,0xd4,0xf7,0x04,0x02,0x00]
+0x04,0x00,0x12,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_f64_e64 v[1:2], -4.0 ; encoding: [0x7e,0x00,0x32,0xd4,0x01,0xef,0x01,0x00]
+0x05,0x00,0x32,0xd4,0x01,0xef,0x01,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0x9a,0xd4,0xc1,0x04,0x02,0x00]
+0x06,0x00,0x9a,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x92,0xd4,0xc1,0x04,0x02,0x00]
+0x07,0x00,0x92,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb2,0xd4,0xc1,0x04,0x02,0x00]
+0x08,0x00,0xb2,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xba,0xd4,0x01,0x04,0x02,0x00]
+0x09,0x00,0xba,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd2,0xd4,0x01,0x04,0x02,0x00]
+0x0a,0x00,0xd2,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf2,0xd4,0x02,0x04,0x02,0x00]
+0x0b,0x00,0xf2,0xd4,0x02,0x04,0x02,0x00
+
+### f_f
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xd8,0xd4,0xf7,0x04,0x02,0x00]
+0x0c,0x00,0xd8,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x10,0xd4,0xf7,0x04,0x02,0x00]
+0x0d,0x00,0x10,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x30,0xd4,0xf7,0x04,0x02,0x00]
+0x0e,0x00,0x30,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x90,0xd4,0xc1,0x04,0x02,0x00]
+0x0f,0x00,0x90,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb0,0xd4,0xc1,0x04,0x02,0x00]
+0x10,0x00,0xb0,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd0,0xd4,0x01,0x04,0x02,0x00]
+0x11,0x00,0xd0,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf0,0xd4,0x02,0x04,0x02,0x00]
+0x12,0x00,0xf0,0xd4,0x02,0x04,0x02,0x00
+
+### ge
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xde,0xd4,0xf7,0x04,0x02,0x00]
+0x13,0x00,0xde,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x16,0xd4,0xf7,0x04,0x02,0x00]
+0x14,0x00,0x16,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x36,0xd4,0xf7,0x04,0x02,0x00]
+0x15,0x00,0x36,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0x9e,0xd4,0xc1,0x04,0x02,0x00]
+0x16,0x00,0x9e,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x96,0xd4,0xc1,0x04,0x02,0x00]
+0x17,0x00,0x96,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb6,0xd4,0xc1,0x04,0x02,0x00]
+0x18,0x00,0xb6,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u16_e64 -1, v2 ; encoding: [0x7e,0x00,0xbe,0xd4,0xc1,0x04,0x02,0x00]
+0x19,0x00,0xbe,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u16_e64 v1, m0 ; encoding: [0x7e,0x00,0xbe,0xd4,0x01,0xf9,0x00,0x00]
+0x1a,0x00,0xbe,0xd4,0x01,0xf9,0x00,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u32_e64 v1, m0 ; encoding: [0x7e,0x00,0xd6,0xd4,0x01,0xf9,0x00,0x00]
+0x1b,0x00,0xd6,0xd4,0x01,0xf9,0x00,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u64_e64 exec, v[2:3] ; encoding: [0x7e,0x00,0xf6,0xd4,0x7e,0x04,0x02,0x00]
+0x1c,0x00,0xf6,0xd4,0x7e,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xdc,0xd4,0xf7,0x04,0x02,0x00]
+0x1d,0x00,0xdc,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x14,0xd4,0xf7,0x04,0x02,0x00]
+0x1e,0x00,0x14,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x34,0xd4,0xf7,0x04,0x02,0x00]
+0x1f,0x00,0x34,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0x9c,0xd4,0xc1,0x04,0x02,0x00]
+0x20,0x00,0x9c,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x94,0xd4,0xc1,0x04,0x02,0x00]
+0x21,0x00,0x94,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb4,0xd4,0xc1,0x04,0x02,0x00]
+0x22,0x00,0xb4,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xbc,0xd4,0x01,0x04,0x02,0x00]
+0x23,0x00,0xbc,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd4,0xd4,0x01,0x04,0x02,0x00]
+0x24,0x00,0xd4,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf4,0xd4,0x02,0x04,0x02,0x00]
+0x25,0x00,0xf4,0xd4,0x02,0x04,0x02,0x00
+
+### le
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xdb,0xd4,0xf7,0x04,0x02,0x00]
+0x26,0x00,0xdb,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x13,0xd4,0xf7,0x04,0x02,0x00]
+0x27,0x00,0x13,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x33,0xd4,0xf7,0x04,0x02,0x00]
+0x28,0x00,0x33,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0x9b,0xd4,0xc1,0x04,0x02,0x00]
+0x29,0x00,0x9b,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x93,0xd4,0xc1,0x04,0x02,0x00]
+0x2a,0x00,0x93,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb3,0xd4,0xc1,0x04,0x02,0x00]
+0x2b,0x00,0xb3,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xbb,0xd4,0x01,0x04,0x02,0x00]
+0x2e,0x00,0xbb,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd3,0xd4,0x01,0x04,0x02,0x00]
+0x2f,0x00,0xd3,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf3,0xd4,0x02,0x04,0x02,0x00]
+0x30,0x00,0xf3,0xd4,0x02,0x04,0x02,0x00
+
+### lg
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lg_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xdd,0xd4,0xf7,0x04,0x02,0x00]
+0x31,0x00,0xdd,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lg_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x15,0xd4,0xf7,0x04,0x02,0x00]
+0x32,0x00,0x15,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lg_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x35,0xd4,0xf7,0x04,0x02,0x00]
+0x33,0x00,0x35,0xd4,0xf7,0x04,0x02,0x00
+
+### lt
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xd9,0xd4,0xf7,0x04,0x02,0x00]
+0x34,0x00,0xd9,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x11,0xd4,0xf7,0x04,0x02,0x00]
+0x35,0x00,0x11,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x31,0xd4,0xf7,0x04,0x02,0x00]
+0x36,0x00,0x31,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0x99,0xd4,0xc1,0x04,0x02,0x00]
+0x37,0x00,0x99,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x91,0xd4,0xc1,0x04,0x02,0x00]
+0x38,0x00,0x91,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb1,0xd4,0xc1,0x04,0x02,0x00]
+0x39,0x00,0xb1,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xb9,0xd4,0x01,0x04,0x02,0x00]
+0x3a,0x00,0xb9,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd1,0xd4,0x01,0x04,0x02,0x00]
+0x3b,0x00,0xd1,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf1,0xd4,0x02,0x04,0x02,0x00]
+0x3c,0x00,0xf1,0xd4,0x02,0x04,0x02,0x00
+
+### ne
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0x9d,0xd4,0xc1,0x04,0x02,0x00]
+0x3d,0x00,0x9d,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x95,0xd4,0xc1,0x04,0x02,0x00]
+0x3e,0x00,0x95,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb5,0xd4,0xc1,0x04,0x02,0x00]
+0x3f,0x00,0xb5,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xbd,0xd4,0x01,0x04,0x02,0x00]
+0x40,0x00,0xbd,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd5,0xd4,0x01,0x04,0x02,0x00]
+0x41,0x00,0xd5,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf5,0xd4,0x02,0x04,0x02,0x00]
+0x42,0x00,0xf5,0xd4,0x02,0x04,0x02,0x00
+
+### neq
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_neq_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xfd,0xd4,0xf7,0x04,0x02,0x00]
+0x43,0x00,0xfd,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_neq_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x1d,0xd4,0xf7,0x04,0x02,0x00]
+0x44,0x00,0x1d,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_neq_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x3d,0xd4,0xf7,0x04,0x02,0x00]
+0x45,0x00,0x3d,0xd4,0xf7,0x04,0x02,0x00
+
+### nge
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nge_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xf9,0xd4,0xf7,0x04,0x02,0x00]
+0x46,0x00,0xf9,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nge_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x19,0xd4,0xf7,0x04,0x02,0x00]
+0x47,0x00,0x19,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nge_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x39,0xd4,0xf7,0x04,0x02,0x00]
+0x48,0x00,0x39,0xd4,0xf7,0x04,0x02,0x00
+
+### ngt
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ngt_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xfb,0xd4,0xf7,0x04,0x02,0x00]
+0x49,0x00,0xfb,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ngt_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x1b,0xd4,0xf7,0x04,0x02,0x00]
+0x4a,0x00,0x1b,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ngt_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x3b,0xd4,0xf7,0x04,0x02,0x00]
+0x4b,0x00,0x3b,0xd4,0xf7,0x04,0x02,0x00
+
+### nle
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nle_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0xfc,0xd4,0xc1,0x04,0x02,0x00]
+0x4c,0x00,0xfc,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nle_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x1c,0xd4,0xc1,0x04,0x02,0x00]
+0x4d,0x00,0x1c,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nle_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0x3c,0xd4,0xc1,0x04,0x02,0x00]
+0x4e,0x00,0x3c,0xd4,0xc1,0x04,0x02,0x00
+
+### nlg
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlg_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0xfa,0xd4,0xc1,0x04,0x02,0x00]
+0x4f,0x00,0xfa,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlg_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x1a,0xd4,0xc1,0x04,0x02,0x00]
+0x50,0x00,0x1a,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlg_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0x3a,0xd4,0xc1,0x04,0x02,0x00]
+0x51,0x00,0x3a,0xd4,0xc1,0x04,0x02,0x00
+
+### nlt
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlt_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0xfe,0xd4,0xc1,0x04,0x02,0x00]
+0x52,0x00,0xfe,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlt_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x1e,0xd4,0xc1,0x04,0x02,0x00]
+0x53,0x00,0x1e,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlt_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0x3e,0xd4,0xc1,0x04,0x02,0x00]
+0x54,0x00,0x3e,0xd4,0xc1,0x04,0x02,0x00
+
+### o_f
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_o_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xdf,0xd4,0xf7,0x04,0x02,0x00]
+0x55,0x00,0xdf,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_o_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x17,0xd4,0xf7,0x04,0x02,0x00]
+0x56,0x00,0x17,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_o_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x37,0xd4,0xf7,0x04,0x02,0x00]
+0x57,0x00,0x37,0xd4,0xf7,0x04,0x02,0x00
+
+### t_i
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x97,0xd4,0xc1,0x04,0x02,0x00]
+0x58,0x00,0x97,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_i32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x97,0xd4,0xf7,0x04,0x02,0x00]
+0x59,0x00,0x97,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb7,0xd4,0xc1,0x04,0x02,0x00]
+0x5a,0x00,0xb7,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd7,0xd4,0x01,0x04,0x02,0x00]
+0x5b,0x00,0xd7,0xd4,0x01,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf7,0xd4,0x02,0x04,0x02,0x00]
+0x5c,0x00,0xf7,0xd4,0x02,0x04,0x02,0x00
+
+### tru
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_tru_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0xff,0xd4,0xc1,0x04,0x02,0x00]
+0x5d,0x00,0xff,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_tru_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x1f,0xd4,0xc1,0x04,0x02,0x00]
+0x5e,0x00,0x1f,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_tru_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0x3f,0xd4,0xc1,0x04,0x02,0x00]
+0x5f,0x00,0x3f,0xd4,0xc1,0x04,0x02,0x00
+
+### u_f
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_u_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0xf8,0xd4,0xc1,0x04,0x02,0x00]
+0x60,0x00,0xf8,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_u_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x18,0xd4,0xc1,0x04,0x02,0x00]
+0x61,0x00,0x18,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_u_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0x38,0xd4,0xc1,0x04,0x02,0x00]
+0x62,0x00,0x38,0xd4,0xc1,0x04,0x02,0x00
>From 76e4eb6c653a52c02299d8b1fadbfcc10c84bef6 Mon Sep 17 00:00:00 2001
From: Jun Wang <jwang86 at yahoo.com>
Date: Fri, 21 Feb 2025 16:43:59 -0800
Subject: [PATCH 2/3] (1) Removed target generation check (2) Added comment.
---
llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
index cd74ff5a34c42..f548ed264019d 100644
--- a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
+++ b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
@@ -803,8 +803,10 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
if (ImmLitIdx != -1 && !IsSOPK)
convertFMAanyK(MI, ImmLitIdx);
- if (isGFX10Plus() &&
- (MCII->get(MI.getOpcode()).TSFlags & SIInstrFlags::VOP3) &&
+ // Some VOPC instructions, e.g., v_cmpx_f_f64, use VOP3 encoding and
+ // have EXEC as implicit destination. Issue a warning if encoding for
+ // vdst is not EXEC.
+ if ((MCII->get(MI.getOpcode()).TSFlags & SIInstrFlags::VOP3) &&
MCII->get(MI.getOpcode()).hasImplicitDefOfPhysReg(AMDGPU::EXEC)) {
auto ExecEncoding = MRI.getEncodingValue(AMDGPU::EXEC_LO);
if (Bytes_[0] != ExecEncoding)
>From f7988dc53b3f6a83f4a856aebda81ab821cd6839 Mon Sep 17 00:00:00 2001
From: Jun Wang <jwang86 at yahoo.com>
Date: Wed, 26 Feb 2025 15:59:51 -0800
Subject: [PATCH 3/3] Tests for gfx11 and gfx12.
---
.../Disassembler/AMDGPU/gfx10_vop3cx_warn.txt | 108 +++--
.../Disassembler/AMDGPU/gfx11_vop3cx_warn.txt | 385 ++++++++++++++++++
.../Disassembler/AMDGPU/gfx12_vop3cx_warn.txt | 325 +++++++++++++++
3 files changed, 762 insertions(+), 56 deletions(-)
create mode 100644 llvm/test/MC/Disassembler/AMDGPU/gfx11_vop3cx_warn.txt
create mode 100644 llvm/test/MC/Disassembler/AMDGPU/gfx12_vop3cx_warn.txt
diff --git a/llvm/test/MC/Disassembler/AMDGPU/gfx10_vop3cx_warn.txt b/llvm/test/MC/Disassembler/AMDGPU/gfx10_vop3cx_warn.txt
index b8bf696cf9fd3..9907f9e055d5d 100644
--- a/llvm/test/MC/Disassembler/AMDGPU/gfx10_vop3cx_warn.txt
+++ b/llvm/test/MC/Disassembler/AMDGPU/gfx10_vop3cx_warn.txt
@@ -183,225 +183,221 @@
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_le_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xbb,0xd4,0x01,0x04,0x02,0x00]
-0x2e,0x00,0xbb,0xd4,0x01,0x04,0x02,0x00
+0x2c,0x00,0xbb,0xd4,0x01,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_le_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd3,0xd4,0x01,0x04,0x02,0x00]
-0x2f,0x00,0xd3,0xd4,0x01,0x04,0x02,0x00
+0x2d,0x00,0xd3,0xd4,0x01,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_le_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf3,0xd4,0x02,0x04,0x02,0x00]
-0x30,0x00,0xf3,0xd4,0x02,0x04,0x02,0x00
+0x2e,0x00,0xf3,0xd4,0x02,0x04,0x02,0x00
### lg
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lg_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xdd,0xd4,0xf7,0x04,0x02,0x00]
-0x31,0x00,0xdd,0xd4,0xf7,0x04,0x02,0x00
+0x2f,0x00,0xdd,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lg_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x15,0xd4,0xf7,0x04,0x02,0x00]
-0x32,0x00,0x15,0xd4,0xf7,0x04,0x02,0x00
+0x30,0x00,0x15,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lg_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x35,0xd4,0xf7,0x04,0x02,0x00]
-0x33,0x00,0x35,0xd4,0xf7,0x04,0x02,0x00
+0x31,0x00,0x35,0xd4,0xf7,0x04,0x02,0x00
### lt
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lt_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xd9,0xd4,0xf7,0x04,0x02,0x00]
-0x34,0x00,0xd9,0xd4,0xf7,0x04,0x02,0x00
+0x32,0x00,0xd9,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lt_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x11,0xd4,0xf7,0x04,0x02,0x00]
-0x35,0x00,0x11,0xd4,0xf7,0x04,0x02,0x00
+0x33,0x00,0x11,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lt_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x31,0xd4,0xf7,0x04,0x02,0x00]
-0x36,0x00,0x31,0xd4,0xf7,0x04,0x02,0x00
+0x34,0x00,0x31,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lt_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0x99,0xd4,0xc1,0x04,0x02,0x00]
-0x37,0x00,0x99,0xd4,0xc1,0x04,0x02,0x00
+0x35,0x00,0x99,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lt_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x91,0xd4,0xc1,0x04,0x02,0x00]
-0x38,0x00,0x91,0xd4,0xc1,0x04,0x02,0x00
+0x36,0x00,0x91,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lt_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb1,0xd4,0xc1,0x04,0x02,0x00]
-0x39,0x00,0xb1,0xd4,0xc1,0x04,0x02,0x00
+0x37,0x00,0xb1,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lt_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xb9,0xd4,0x01,0x04,0x02,0x00]
-0x3a,0x00,0xb9,0xd4,0x01,0x04,0x02,0x00
+0x38,0x00,0xb9,0xd4,0x01,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lt_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd1,0xd4,0x01,0x04,0x02,0x00]
-0x3b,0x00,0xd1,0xd4,0x01,0x04,0x02,0x00
+0x39,0x00,0xd1,0xd4,0x01,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_lt_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf1,0xd4,0x02,0x04,0x02,0x00]
-0x3c,0x00,0xf1,0xd4,0x02,0x04,0x02,0x00
+0x3a,0x00,0xf1,0xd4,0x02,0x04,0x02,0x00
### ne
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_ne_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0x9d,0xd4,0xc1,0x04,0x02,0x00]
-0x3d,0x00,0x9d,0xd4,0xc1,0x04,0x02,0x00
+0x3b,0x00,0x9d,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_ne_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x95,0xd4,0xc1,0x04,0x02,0x00]
-0x3e,0x00,0x95,0xd4,0xc1,0x04,0x02,0x00
+0x3c,0x00,0x95,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_ne_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb5,0xd4,0xc1,0x04,0x02,0x00]
-0x3f,0x00,0xb5,0xd4,0xc1,0x04,0x02,0x00
+0x3d,0x00,0xb5,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_ne_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xbd,0xd4,0x01,0x04,0x02,0x00]
-0x40,0x00,0xbd,0xd4,0x01,0x04,0x02,0x00
+0x3e,0x00,0xbd,0xd4,0x01,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_ne_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd5,0xd4,0x01,0x04,0x02,0x00]
-0x41,0x00,0xd5,0xd4,0x01,0x04,0x02,0x00
+0x3f,0x00,0xd5,0xd4,0x01,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_ne_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf5,0xd4,0x02,0x04,0x02,0x00]
-0x42,0x00,0xf5,0xd4,0x02,0x04,0x02,0x00
+0x40,0x00,0xf5,0xd4,0x02,0x04,0x02,0x00
### neq
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_neq_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xfd,0xd4,0xf7,0x04,0x02,0x00]
-0x43,0x00,0xfd,0xd4,0xf7,0x04,0x02,0x00
+0x41,0x00,0xfd,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_neq_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x1d,0xd4,0xf7,0x04,0x02,0x00]
-0x44,0x00,0x1d,0xd4,0xf7,0x04,0x02,0x00
+0x42,0x00,0x1d,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_neq_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x3d,0xd4,0xf7,0x04,0x02,0x00]
-0x45,0x00,0x3d,0xd4,0xf7,0x04,0x02,0x00
+0x43,0x00,0x3d,0xd4,0xf7,0x04,0x02,0x00
### nge
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nge_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xf9,0xd4,0xf7,0x04,0x02,0x00]
-0x46,0x00,0xf9,0xd4,0xf7,0x04,0x02,0x00
+0x44,0x00,0xf9,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nge_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x19,0xd4,0xf7,0x04,0x02,0x00]
-0x47,0x00,0x19,0xd4,0xf7,0x04,0x02,0x00
+0x45,0x00,0x19,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nge_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x39,0xd4,0xf7,0x04,0x02,0x00]
-0x48,0x00,0x39,0xd4,0xf7,0x04,0x02,0x00
+0x46,0x00,0x39,0xd4,0xf7,0x04,0x02,0x00
### ngt
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_ngt_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xfb,0xd4,0xf7,0x04,0x02,0x00]
-0x49,0x00,0xfb,0xd4,0xf7,0x04,0x02,0x00
+0x47,0x00,0xfb,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_ngt_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x1b,0xd4,0xf7,0x04,0x02,0x00]
-0x4a,0x00,0x1b,0xd4,0xf7,0x04,0x02,0x00
+0x48,0x00,0x1b,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_ngt_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x3b,0xd4,0xf7,0x04,0x02,0x00]
-0x4b,0x00,0x3b,0xd4,0xf7,0x04,0x02,0x00
+0x49,0x00,0x3b,0xd4,0xf7,0x04,0x02,0x00
### nle
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nle_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0xfc,0xd4,0xc1,0x04,0x02,0x00]
-0x4c,0x00,0xfc,0xd4,0xc1,0x04,0x02,0x00
+0x4a,0x00,0xfc,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nle_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x1c,0xd4,0xc1,0x04,0x02,0x00]
-0x4d,0x00,0x1c,0xd4,0xc1,0x04,0x02,0x00
+0x4b,0x00,0x1c,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nle_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0x3c,0xd4,0xc1,0x04,0x02,0x00]
-0x4e,0x00,0x3c,0xd4,0xc1,0x04,0x02,0x00
+0x4c,0x00,0x3c,0xd4,0xc1,0x04,0x02,0x00
### nlg
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nlg_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0xfa,0xd4,0xc1,0x04,0x02,0x00]
-0x4f,0x00,0xfa,0xd4,0xc1,0x04,0x02,0x00
+0x4d,0x00,0xfa,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nlg_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x1a,0xd4,0xc1,0x04,0x02,0x00]
-0x50,0x00,0x1a,0xd4,0xc1,0x04,0x02,0x00
+0x4e,0x00,0x1a,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nlg_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0x3a,0xd4,0xc1,0x04,0x02,0x00]
-0x51,0x00,0x3a,0xd4,0xc1,0x04,0x02,0x00
+0x4f,0x00,0x3a,0xd4,0xc1,0x04,0x02,0x00
### nlt
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nlt_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0xfe,0xd4,0xc1,0x04,0x02,0x00]
-0x52,0x00,0xfe,0xd4,0xc1,0x04,0x02,0x00
+0x50,0x00,0xfe,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nlt_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x1e,0xd4,0xc1,0x04,0x02,0x00]
-0x53,0x00,0x1e,0xd4,0xc1,0x04,0x02,0x00
+0x51,0x00,0x1e,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_nlt_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0x3e,0xd4,0xc1,0x04,0x02,0x00]
-0x54,0x00,0x3e,0xd4,0xc1,0x04,0x02,0x00
+0x52,0x00,0x3e,0xd4,0xc1,0x04,0x02,0x00
### o_f
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_o_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xdf,0xd4,0xf7,0x04,0x02,0x00]
-0x55,0x00,0xdf,0xd4,0xf7,0x04,0x02,0x00
+0x53,0x00,0xdf,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_o_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x17,0xd4,0xf7,0x04,0x02,0x00]
-0x56,0x00,0x17,0xd4,0xf7,0x04,0x02,0x00
+0x54,0x00,0x17,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_o_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0x37,0xd4,0xf7,0x04,0x02,0x00]
-0x57,0x00,0x37,0xd4,0xf7,0x04,0x02,0x00
+0x55,0x00,0x37,0xd4,0xf7,0x04,0x02,0x00
### t_i
-# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
-# v_cmpx_t_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0x97,0xd4,0xc1,0x04,0x02,0x00]
-0x58,0x00,0x97,0xd4,0xc1,0x04,0x02,0x00
-
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_t_i32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x97,0xd4,0xf7,0x04,0x02,0x00]
-0x59,0x00,0x97,0xd4,0xf7,0x04,0x02,0x00
+0x56,0x00,0x97,0xd4,0xf7,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_t_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xb7,0xd4,0xc1,0x04,0x02,0x00]
-0x5a,0x00,0xb7,0xd4,0xc1,0x04,0x02,0x00
+0x57,0x00,0xb7,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_t_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xd7,0xd4,0x01,0x04,0x02,0x00]
-0x5b,0x00,0xd7,0xd4,0x01,0x04,0x02,0x00
+0x58,0x00,0xd7,0xd4,0x01,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_t_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xf7,0xd4,0x02,0x04,0x02,0x00]
-0x5c,0x00,0xf7,0xd4,0x02,0x04,0x02,0x00
+0x59,0x00,0xf7,0xd4,0x02,0x04,0x02,0x00
### tru
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_tru_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0xff,0xd4,0xc1,0x04,0x02,0x00]
-0x5d,0x00,0xff,0xd4,0xc1,0x04,0x02,0x00
+0x5a,0x00,0xff,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_tru_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x1f,0xd4,0xc1,0x04,0x02,0x00]
-0x5e,0x00,0x1f,0xd4,0xc1,0x04,0x02,0x00
+0x5b,0x00,0x1f,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_tru_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0x3f,0xd4,0xc1,0x04,0x02,0x00]
-0x5f,0x00,0x3f,0xd4,0xc1,0x04,0x02,0x00
+0x5c,0x00,0x3f,0xd4,0xc1,0x04,0x02,0x00
### u_f
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_u_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0xf8,0xd4,0xc1,0x04,0x02,0x00]
-0x60,0x00,0xf8,0xd4,0xc1,0x04,0x02,0x00
+0x5d,0x00,0xf8,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_u_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x18,0xd4,0xc1,0x04,0x02,0x00]
-0x61,0x00,0x18,0xd4,0xc1,0x04,0x02,0x00
+0x5e,0x00,0x18,0xd4,0xc1,0x04,0x02,0x00
# GFX10: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
# v_cmpx_u_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0x38,0xd4,0xc1,0x04,0x02,0x00]
-0x62,0x00,0x38,0xd4,0xc1,0x04,0x02,0x00
+0x5f,0x00,0x38,0xd4,0xc1,0x04,0x02,0x00
diff --git a/llvm/test/MC/Disassembler/AMDGPU/gfx11_vop3cx_warn.txt b/llvm/test/MC/Disassembler/AMDGPU/gfx11_vop3cx_warn.txt
new file mode 100644
index 0000000000000..d8988afc23613
--- /dev/null
+++ b/llvm/test/MC/Disassembler/AMDGPU/gfx11_vop3cx_warn.txt
@@ -0,0 +1,385 @@
+# RUN: llvm-mc -triple=amdgcn -mcpu=gfx1100 -mattr=+real-true16 -disassemble -show-encoding < %s 2>&1 | FileCheck -check-prefixes=GFX11 %s
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_class_f16_e64 v1, v2 ; encoding: [0x7e,0x00,0xfd,0xd4,0x01,0x05,0x02,0x00]
+0x00,0x00,0xfd,0xd4,0x01,0x05,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_class_f32_e64 v1, v2 ; encoding: [0x7e,0x00,0xfe,0xd4,0x01,0x05,0x02,0x00]
+0x01,0x00,0xfe,0xd4,0x01,0x05,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_class_f64_e64 s[4:5], v2 ; encoding: [0x7e,0x00,0xff,0xd4,0x04,0x04,0x02,0x00]
+0x02,0x00,0xff,0xd4,0x04,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_f16_e64 0.5, v2 ; encoding: [0x7e,0x00,0x82,0xd4,0xf0,0x04,0x02,0x00]
+0x03,0x00,0x82,0xd4,0xf0,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x92,0xd4,0xf7,0x04,0x02,0x00]
+0x04,0x00,0x92,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_f64_e64 v[1:2], -4.0 ; encoding: [0x7e,0x00,0xa2,0xd4,0x01,0xef,0x01,0x00]
+0x05,0x00,0xa2,0xd4,0x01,0xef,0x01,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0xb2,0xd4,0xc1,0x04,0x02,0x00]
+0x06,0x00,0xb2,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0xc2,0xd4,0xc1,0x04,0x02,0x00]
+0x07,0x00,0xc2,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xd2,0xd4,0xc1,0x04,0x02,0x00]
+0x08,0x00,0xd2,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xba,0xd4,0x01,0x04,0x02,0x00]
+0x09,0x00,0xba,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xca,0xd4,0x01,0x04,0x02,0x00]
+0x0a,0x00,0xca,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xda,0xd4,0x02,0x04,0x02,0x00]
+0x0b,0x00,0xda,0xd4,0x02,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x80,0xd4,0xf7,0x04,0x02,0x00]
+0x0c,0x00,0x80,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x90,0xd4,0xf7,0x04,0x02,0x00]
+0x0d,0x00,0x90,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0xa0,0xd4,0xf7,0x04,0x02,0x00]
+0x0e,0x00,0xa0,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0xc0,0xd4,0xc1,0x04,0x02,0x00]
+0x0f,0x00,0xc0,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xd0,0xd4,0xc1,0x04,0x02,0x00]
+0x10,0x00,0xd0,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xc8,0xd4,0x01,0x04,0x02,0x00]
+0x11,0x00,0xc8,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_f_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xd8,0xd4,0x02,0x04,0x02,0x00]
+0x12,0x00,0xd8,0xd4,0x02,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x86,0xd4,0xf7,0x04,0x02,0x00]
+0x13,0x00,0x86,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x96,0xd4,0xf7,0x04,0x02,0x00]
+0x14,0x00,0x96,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0xa6,0xd4,0xf7,0x04,0x02,0x00]
+0x15,0x00,0xa6,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0xb6,0xd4,0xc1,0x04,0x02,0x00]
+0x16,0x00,0xb6,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0xc6,0xd4,0xc1,0x04,0x02,0x00]
+0x17,0x00,0xc6,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xd6,0xd4,0xc1,0x04,0x02,0x00]
+0x18,0x00,0xd6,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u16_e64 -1, v2 ; encoding: [0x7e,0x00,0xbe,0xd4,0xc1,0x04,0x02,0x00]
+0x19,0x00,0xbe,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u16_e64 v1, m0 ; encoding: [0x7e,0x00,0xbe,0xd4,0x01,0xfb,0x00,0x00]
+0x1a,0x00,0xbe,0xd4,0x01,0xfb,0x00,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u32_e64 v1, m0 ; encoding: [0x7e,0x00,0xce,0xd4,0x01,0xfb,0x00,0x00]
+0x1b,0x00,0xce,0xd4,0x01,0xfb,0x00,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u64_e64 exec, v[2:3] ; encoding: [0x7e,0x00,0xde,0xd4,0x7e,0x04,0x02,0x00]
+0x1c,0x00,0xde,0xd4,0x7e,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x84,0xd4,0xf7,0x04,0x02,0x00]
+0x1d,0x00,0x84,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x94,0xd4,0xf7,0x04,0x02,0x00]
+0x1e,0x00,0x94,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0xa4,0xd4,0xf7,0x04,0x02,0x00]
+0x1f,0x00,0xa4,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0xb4,0xd4,0xc1,0x04,0x02,0x00]
+0x20,0x00,0xb4,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0xc4,0xd4,0xc1,0x04,0x02,0x00]
+0x21,0x00,0xc4,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xd4,0xd4,0xc1,0x04,0x02,0x00]
+0x22,0x00,0xd4,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xbc,0xd4,0x01,0x04,0x02,0x00]
+0x23,0x00,0xbc,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xcc,0xd4,0x01,0x04,0x02,0x00]
+0x24,0x00,0xcc,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xdc,0xd4,0x02,0x04,0x02,0x00]
+0x25,0x00,0xdc,0xd4,0x02,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x83,0xd4,0xf7,0x04,0x02,0x00]
+0x26,0x00,0x83,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x93,0xd4,0xf7,0x04,0x02,0x00]
+0x27,0x00,0x93,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0xa3,0xd4,0xf7,0x04,0x02,0x00]
+0x28,0x00,0xa3,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0xb3,0xd4,0xc1,0x04,0x02,0x00]
+0x29,0x00,0xb3,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0xc3,0xd4,0xc1,0x04,0x02,0x00]
+0x2a,0x00,0xc3,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xd3,0xd4,0xc1,0x04,0x02,0x00]
+0x2b,0x00,0xd3,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xbb,0xd4,0x01,0x04,0x02,0x00]
+0x2c,0x00,0xbb,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xcb,0xd4,0x01,0x04,0x02,0x00]
+0x2d,0x00,0xcb,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xdb,0xd4,0x02,0x04,0x02,0x00]
+0x2e,0x00,0xdb,0xd4,0x02,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lg_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x85,0xd4,0xf7,0x04,0x02,0x00]
+0x2f,0x00,0x85,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lg_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x95,0xd4,0xf7,0x04,0x02,0x00]
+0x30,0x00,0x95,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lg_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0xa5,0xd4,0xf7,0x04,0x02,0x00]
+0x31,0x00,0xa5,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x81,0xd4,0xf7,0x04,0x02,0x00]
+0x32,0x00,0x81,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x91,0xd4,0xf7,0x04,0x02,0x00]
+0x33,0x00,0x91,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0xa1,0xd4,0xf7,0x04,0x02,0x00]
+0x34,0x00,0xa1,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0xb1,0xd4,0xc1,0x04,0x02,0x00]
+0x35,0x00,0xb1,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0xc1,0xd4,0xc1,0x04,0x02,0x00]
+0x36,0x00,0xc1,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xd1,0xd4,0xc1,0x04,0x02,0x00]
+0x37,0x00,0xd1,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xb9,0xd4,0x01,0x04,0x02,0x00]
+0x38,0x00,0xb9,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xc9,0xd4,0x01,0x04,0x02,0x00]
+0x39,0x00,0xc9,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xd9,0xd4,0x02,0x04,0x02,0x00]
+0x3a,0x00,0xd9,0xd4,0x02,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_i16_e64 -1, v2 ; encoding: [0x7e,0x00,0xb5,0xd4,0xc1,0x04,0x02,0x00]
+0x3b,0x00,0xb5,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_i32_e64 -1, v2 ; encoding: [0x7e,0x00,0xc5,0xd4,0xc1,0x04,0x02,0x00]
+0x3c,0x00,0xc5,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xd5,0xd4,0xc1,0x04,0x02,0x00]
+0x3d,0x00,0xd5,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_u16_e64 s1, v2 ; encoding: [0x7e,0x00,0xbd,0xd4,0x01,0x04,0x02,0x00]
+0x3e,0x00,0xbd,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xcd,0xd4,0x01,0x04,0x02,0x00]
+0x3f,0x00,0xcd,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xdd,0xd4,0x02,0x04,0x02,0x00]
+0x40,0x00,0xdd,0xd4,0x02,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_neq_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x8d,0xd4,0xf7,0x04,0x02,0x00]
+0x41,0x00,0x8d,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_neq_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x9d,0xd4,0xf7,0x04,0x02,0x00]
+0x42,0x00,0x9d,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_neq_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0xad,0xd4,0xf7,0x04,0x02,0x00]
+0x43,0x00,0xad,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nge_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x89,0xd4,0xf7,0x04,0x02,0x00]
+0x44,0x00,0x89,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nge_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x99,0xd4,0xf7,0x04,0x02,0x00]
+0x45,0x00,0x99,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nge_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0xa9,0xd4,0xf7,0x04,0x02,0x00]
+0x46,0x00,0xa9,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ngt_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x8b,0xd4,0xf7,0x04,0x02,0x00]
+0x47,0x00,0x8b,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ngt_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x9b,0xd4,0xf7,0x04,0x02,0x00]
+0x48,0x00,0x9b,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ngt_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0xab,0xd4,0xf7,0x04,0x02,0x00]
+0x49,0x00,0xab,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nle_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0x8c,0xd4,0xc1,0x04,0x02,0x00]
+0x4a,0x00,0x8c,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nle_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x9c,0xd4,0xc1,0x04,0x02,0x00]
+0x4b,0x00,0x9c,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nle_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xac,0xd4,0xc1,0x04,0x02,0x00]
+0x4c,0x00,0xac,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlg_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0x8a,0xd4,0xc1,0x04,0x02,0x00]
+0x4d,0x00,0x8a,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlg_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x9a,0xd4,0xc1,0x04,0x02,0x00]
+0x4e,0x00,0x9a,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlg_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xaa,0xd4,0xc1,0x04,0x02,0x00]
+0x4f,0x00,0xaa,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlt_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0x8e,0xd4,0xc1,0x04,0x02,0x00]
+0x50,0x00,0x8e,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlt_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x9e,0xd4,0xc1,0x04,0x02,0x00]
+0x51,0x00,0x9e,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlt_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xae,0xd4,0xc1,0x04,0x02,0x00]
+0x52,0x00,0xae,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_o_f16_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x87,0xd4,0xf7,0x04,0x02,0x00]
+0x53,0x00,0x87,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_o_f32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0x97,0xd4,0xf7,0x04,0x02,0x00]
+0x54,0x00,0x97,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_o_f64_e64 -4.0, v[2:3] ; encoding: [0x7e,0x00,0xa7,0xd4,0xf7,0x04,0x02,0x00]
+0x55,0x00,0xa7,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_i32_e64 -4.0, v2 ; encoding: [0x7e,0x00,0xc7,0xd4,0xf7,0x04,0x02,0x00]
+0x56,0x00,0xc7,0xd4,0xf7,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_i64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xd7,0xd4,0xc1,0x04,0x02,0x00]
+0x57,0x00,0xd7,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_u32_e64 s1, v2 ; encoding: [0x7e,0x00,0xcf,0xd4,0x01,0x04,0x02,0x00]
+0x58,0x00,0xcf,0xd4,0x01,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_u64_e64 s[2:3], v[2:3] ; encoding: [0x7e,0x00,0xdf,0xd4,0x02,0x04,0x02,0x00]
+0x59,0x00,0xdf,0xd4,0x02,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0x8f,0xd4,0xc1,0x04,0x02,0x00]
+0x5a,0x00,0x8f,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x9f,0xd4,0xc1,0x04,0x02,0x00]
+0x5b,0x00,0x9f,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_t_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xaf,0xd4,0xc1,0x04,0x02,0x00]
+0x5c,0x00,0xaf,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_u_f16_e64 -1, v2 ; encoding: [0x7e,0x00,0x88,0xd4,0xc1,0x04,0x02,0x00]
+0x5d,0x00,0x88,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_u_f32_e64 -1, v2 ; encoding: [0x7e,0x00,0x98,0xd4,0xc1,0x04,0x02,0x00]
+0x5e,0x00,0x98,0xd4,0xc1,0x04,0x02,0x00
+
+# GFX11: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_u_f64_e64 -1, v[2:3] ; encoding: [0x7e,0x00,0xa8,0xd4,0xc1,0x04,0x02,0x00]
+0x5f,0x00,0xa8,0xd4,0xc1,0x04,0x02,0x00
diff --git a/llvm/test/MC/Disassembler/AMDGPU/gfx12_vop3cx_warn.txt b/llvm/test/MC/Disassembler/AMDGPU/gfx12_vop3cx_warn.txt
new file mode 100644
index 0000000000000..99a7976237344
--- /dev/null
+++ b/llvm/test/MC/Disassembler/AMDGPU/gfx12_vop3cx_warn.txt
@@ -0,0 +1,325 @@
+# RUN: llvm-mc -triple=amdgcn -mcpu=gfx1200 -mattr=+real-true16 -disassemble -show-encoding < %s 2>&1 | FileCheck -check-prefixes=GFX12 %s
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_class_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0xfd,0xd4,0x01,0x05,0x02,0x00]
+0x00,0x00,0xfd,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_class_f32_e64 v1, v2 ; encoding: [0x7e,0x00,0xfe,0xd4,0x01,0x05,0x02,0x00]
+0x01,0x00,0xfe,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_class_f64_e64 s[4:5], v2 ; encoding: [0x7e,0x00,0xff,0xd4,0x04,0x04,0x02,0x00]
+0x02,0x00,0xff,0xd4,0x04,0x04,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x82,0xd4,0x01,0x05,0x02,0x00]
+0x03,0x00,0x82,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_f32_e64 m0, 0.5 ; encoding: [0x7e,0x00,0x92,0xd4,0x7d,0xe0,0x01,0x00]
+0x04,0x00,0x92,0xd4,0x7d,0xe0,0x01,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_f64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xa2,0xd4,0x01,0x05,0x02,0x00]
+0x05,0x00,0xa2,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_i16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0xb2,0xd4,0x01,0x05,0x02,0x00]
+0x06,0x00,0xb2,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_i32_e64 v1, v2 ; encoding: [0x7e,0x00,0xc2,0xd4,0x01,0x05,0x02,0x00]
+0x07,0x00,0xc2,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_i64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xd2,0xd4,0x01,0x05,0x02,0x00]
+0x08,0x00,0xd2,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_u16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0xba,0xd4,0x01,0x05,0x02,0x00]
+0x09,0x00,0xba,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_u32_e64 v1, v2 ; encoding: [0x7e,0x00,0xca,0xd4,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xca,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_eq_u64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xda,0xd4,0x01,0x05,0x02,0x00]
+0x0b,0x00,0xda,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x86,0xd4,0x01,0x05,0x02,0x00]
+0x0c,0x00,0x86,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_f32_e64 s1, s2 ; encoding: [0x7e,0x00,0x96,0xd4,0x01,0x04,0x00,0x00]
+0x0d,0x00,0x96,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_f64_e64 vcc, ttmp[14:15] ; encoding: [0x7e,0x00,0xa6,0xd4,0x6a,0xf4,0x00,0x00]
+0x0e,0x00,0xa6,0xd4,0x6a,0xf4,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_i16_e64 v255.l, v255.l ; encoding: [0x7e,0x00,0xb6,0xd4,0xff,0xff,0x03,0x00]
+0x0f,0x00,0xb6,0xd4,0xff,0xff,0x03,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_i32_e64 m0, 0.5 ; encoding: [0x7e,0x00,0xc6,0xd4,0x7d,0xe0,0x01,0x00]
+0x10,0x00,0xc6,0xd4,0x7d,0xe0,0x01,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_i64_e64 -1, -1 ; encoding: [0x7e,0x00,0xd6,0xd4,0xc1,0x82,0x01,0x00]
+0x11,0x00,0xd6,0xd4,0xc1,0x82,0x01,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u16_e64 s1, s2 ; encoding: [0x7e,0x00,0xbe,0xd4,0x01,0x04,0x00,0x00]
+0x12,0x00,0xbe,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u32_e64 exec_lo, -1 ; encoding: [0x7e,0x00,0xce,0xd4,0x7e,0x82,0x01,0x00]
+0x13,0x00,0xce,0xd4,0x7e,0x82,0x01,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ge_u64_e64 s[2:3], s[4:5] ; encoding: [0x7e,0x00,0xde,0xd4,0x02,0x08,0x00,0x00]
+0x14,0x00,0xde,0xd4,0x02,0x08,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x84,0xd4,0x01,0x05,0x02,0x00]
+0x15,0x00,0x84,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_f32_e64 s1, s2 ; encoding: [0x7e,0x00,0x94,0xd4,0x01,0x04,0x00,0x00]
+0x16,0x00,0x94,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_f64_e64 v[254:255], v[254:255] ; encoding: [0x7e,0x00,0xa4,0xd4,0xfe,0xfd,0x03,0x00]
+0x17,0x00,0xa4,0xd4,0xfe,0xfd,0x03,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_i16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0xb4,0xd4,0x01,0x05,0x02,0x00]
+0x18,0x00,0xb4,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_i32_e64 m0, 0.5 ; encoding: [0x7e,0x00,0xc4,0xd4,0x7d,0xe0,0x01,0x00]
+0x19,0x00,0xc4,0xd4,0x7d,0xe0,0x01,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_i64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xd4,0xd4,0x01,0x05,0x02,0x00]
+0x1a,0x00,0xd4,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_u16_e64 v1.h, v2.l op_sel:[1,0,0] ; encoding: [0x7e,0x08,0xbc,0xd4,0x01,0x05,0x02,0x00]
+0x1b,0x08,0xbc,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_u32_e64 v1, v2 ; encoding: [0x7e,0x00,0xcc,0xd4,0x01,0x05,0x02,0x00]
+0x1c,0x00,0xcc,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_gt_u64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xdc,0xd4,0x01,0x05,0x02,0x00]
+0x1d,0x00,0xdc,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_f16_e64 s1, s2 ; encoding: [0x7e,0x00,0x83,0xd4,0x01,0x04,0x00,0x00]
+0x1e,0x00,0x83,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_f32_e64 s1, s2 ; encoding: [0x7e,0x00,0x93,0xd4,0x01,0x04,0x00,0x00]
+0x1f,0x00,0x93,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_f64_e64 s[104:105], s[104:105] ; encoding: [0x7e,0x00,0xa3,0xd4,0x68,0xd0,0x00,0x00]
+0x20,0x00,0xa3,0xd4,0x68,0xd0,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_i16_e64 v255.l, v255.l ; encoding: [0x7e,0x00,0xb3,0xd4,0xff,0xff,0x03,0x00]
+0x21,0x00,0xb3,0xd4,0xff,0xff,0x03,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_i32_e64 m0, 0.5 ; encoding: [0x7e,0x00,0xc3,0xd4,0x7d,0xe0,0x01,0x00]
+0x22,0x00,0xc3,0xd4,0x7d,0xe0,0x01,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_i64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xd3,0xd4,0x01,0x05,0x02,0x00]
+0x23,0x00,0xd3,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_u16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0xbb,0xd4,0x01,0x05,0x02,0x00]
+0x24,0x00,0xbb,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_u32_e64 s105, s105 ; encoding: [0x7e,0x00,0xcb,0xd4,0x69,0xd2,0x00,0x00]
+0x25,0x00,0xcb,0xd4,0x69,0xd2,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_le_u64_e64 s[2:3], s[4:5] ; encoding: [0x7e,0x00,0xdb,0xd4,0x02,0x08,0x00,0x00]
+0x26,0x00,0xdb,0xd4,0x02,0x08,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lg_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x85,0xd4,0x01,0x05,0x02,0x00]
+0x27,0x00,0x85,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lg_f32_e64 s1, s2 ; encoding: [0x7e,0x00,0x95,0xd4,0x01,0x04,0x00,0x00]
+0x28,0x00,0x95,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lg_f64_e64 s[2:3], s[4:5] ; encoding: [0x7e,0x00,0xa5,0xd4,0x02,0x08,0x00,0x00]
+0x29,0x00,0xa5,0xd4,0x02,0x08,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_f16_e64 v255.l, v255.l ; encoding: [0x7e,0x00,0x81,0xd4,0xff,0xff,0x03,0x00]
+0x2a,0x00,0x81,0xd4,0xff,0xff,0x03,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_f32_e64 v1, v2 ; encoding: [0x7e,0x00,0x91,0xd4,0x01,0x05,0x02,0x00]
+0x2b,0x00,0x91,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_f64_e64 s[104:105], s[104:105] ; encoding: [0x7e,0x00,0xa1,0xd4,0x68,0xd0,0x00,0x00]
+0x2c,0x00,0xa1,0xd4,0x68,0xd0,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_i16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0xb1,0xd4,0x01,0x05,0x02,0x00]
+0x2d,0x00,0xb1,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_i32_e64 s1, s2 ; encoding: [0x7e,0x00,0xc1,0xd4,0x01,0x04,0x00,0x00]
+0x2e,0x00,0xc1,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_i64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xd1,0xd4,0x01,0x05,0x02,0x00]
+0x2f,0x00,0xd1,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_u16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0xb9,0xd4,0x01,0x05,0x02,0x00]
+0x30,0x00,0xb9,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_u32_e64 s1, s2 ; encoding: [0x7e,0x00,0xc9,0xd4,0x01,0x04,0x00,0x00]
+0x31,0x00,0xc9,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_lt_u64_e64 -1, -1 ; encoding: [0x7e,0x00,0xd9,0xd4,0xc1,0x82,0x01,0x00]
+0x32,0x00,0xd9,0xd4,0xc1,0x82,0x01,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_i16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0xb5,0xd4,0x01,0x05,0x02,0x00]
+0x33,0x00,0xb5,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_i32_e64 s1, s2 ; encoding: [0x7e,0x00,0xc5,0xd4,0x01,0x04,0x00,0x00]
+0x34,0x00,0xc5,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_i64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xd5,0xd4,0x01,0x05,0x02,0x00]
+0x35,0x00,0xd5,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_u16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0xbd,0xd4,0x01,0x05,0x02,0x00]
+0x36,0x00,0xbd,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_u32_e64 s105, s105 ; encoding: [0x7e,0x00,0xcd,0xd4,0x69,0xd2,0x00,0x00]
+0x37,0x00,0xcd,0xd4,0x69,0xd2,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ne_u64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xdd,0xd4,0x01,0x05,0x02,0x00]
+0x38,0x00,0xdd,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_neq_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x8d,0xd4,0x01,0x05,0x02,0x00]
+0x39,0x00,0x8d,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_neq_f32_e64 v1, v2 ; encoding: [0x7e,0x00,0x9d,0xd4,0x01,0x05,0x02,0x00]
+0x3a,0x00,0x9d,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_neq_f64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xad,0xd4,0x01,0x05,0x02,0x00]
+0x3b,0x00,0xad,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nge_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x89,0xd4,0x01,0x05,0x02,0x00]
+0x3c,0x00,0x89,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nge_f32_e64 s105, s105 ; encoding: [0x7e,0x00,0x99,0xd4,0x69,0xd2,0x00,0x00]
+0x3d,0x00,0x99,0xd4,0x69,0xd2,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nge_f64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xa9,0xd4,0x01,0x05,0x02,0x00]
+0x3e,0x00,0xa9,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ngt_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x8b,0xd4,0x01,0x05,0x02,0x00]
+0x3f,0x00,0x8b,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ngt_f32_e64 s1, s2 ; encoding: [0x7e,0x00,0x9b,0xd4,0x01,0x04,0x00,0x00]
+0x40,0x00,0x9b,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_ngt_f64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xab,0xd4,0x01,0x05,0x02,0x00]
+0x41,0x00,0xab,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nle_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x8c,0xd4,0x01,0x05,0x02,0x00]
+0x42,0x00,0x8c,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nle_f32_e64 v1, v2 ; encoding: [0x7e,0x00,0x9c,0xd4,0x01,0x05,0x02,0x00]
+0x43,0x00,0x9c,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nle_f64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xac,0xd4,0x01,0x05,0x02,0x00]
+0x44,0x00,0xac,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlg_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x8a,0xd4,0x01,0x05,0x02,0x00]
+0x45,0x00,0x8a,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlg_f32_e64 m0, 0.5 ; encoding: [0x7e,0x00,0x9a,0xd4,0x7d,0xe0,0x01,0x00]
+0x46,0x00,0x9a,0xd4,0x7d,0xe0,0x01,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlg_f64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xaa,0xd4,0x01,0x05,0x02,0x00]
+0x47,0x00,0xaa,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlt_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x8e,0xd4,0x01,0x05,0x02,0x00]
+0x48,0x00,0x8e,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlt_f32_e64 s1, s2 ; encoding: [0x7e,0x00,0x9e,0xd4,0x01,0x04,0x00,0x00]
+0x49,0x00,0x9e,0xd4,0x01,0x04,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_nlt_f64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xae,0xd4,0x01,0x05,0x02,0x00]
+0x4a,0x00,0xae,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_o_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x87,0xd4,0x01,0x05,0x02,0x00]
+0x4b,0x00,0x87,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_o_f32_e64 v1, v2 ; encoding: [0x7e,0x00,0x97,0xd4,0x01,0x05,0x02,0x00]
+0x4c,0x00,0x97,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_o_f64_e64 s[2:3], s[4:5] ; encoding: [0x7e,0x00,0xa7,0xd4,0x02,0x08,0x00,0x00]
+0x4d,0x00,0xa7,0xd4,0x02,0x08,0x00,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_u_f16_e64 v1.l, v2.l ; encoding: [0x7e,0x00,0x88,0xd4,0x01,0x05,0x02,0x00]
+0x4e,0x00,0x88,0xd4,0x01,0x05,0x02,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_u_f32_e64 m0, 0.5 ; encoding: [0x7e,0x00,0x98,0xd4,0x7d,0xe0,0x01,0x00]
+0x4f,0x00,0x98,0xd4,0x7d,0xe0,0x01,0x00
+
+# GFX12: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# v_cmpx_u_f64_e64 v[1:2], v[2:3] ; encoding: [0x7e,0x00,0xa8,0xd4,0x01,0x05,0x02,0x00]
+0x50,0x00,0xa8,0xd4,0x01,0x05,0x02,0x00
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