[llvm] bc91acc - [AMDGPU][MC] Disassembler warning for v_cmpx instructions (#127925)
via llvm-commits
llvm-commits at lists.llvm.org
Thu Feb 27 09:17:23 PST 2025
Author: Jun Wang
Date: 2025-02-27T09:17:18-08:00
New Revision: bc91accbfe1644912f70645b51b1fade4bd61249
URL: https://github.com/llvm/llvm-project/commit/bc91accbfe1644912f70645b51b1fade4bd61249
DIFF: https://github.com/llvm/llvm-project/commit/bc91accbfe1644912f70645b51b1fade4bd61249.diff
LOG: [AMDGPU][MC] Disassembler warning for v_cmpx instructions (#127925)
For GFX10+ the destination 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
EXEC a warning is issued.
Added:
llvm/test/MC/Disassembler/AMDGPU/gfx10_vop3cx_warn.txt
llvm/test/MC/Disassembler/AMDGPU/gfx11_vop3cx_warn.txt
llvm/test/MC/Disassembler/AMDGPU/gfx12_vop3cx_warn.txt
Modified:
llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
Removed:
################################################################################
diff --git a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
index 2ed313eac649e..afed8b999d8eb 100644
--- a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
+++ b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
@@ -664,6 +664,8 @@ 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);
@@ -802,8 +804,18 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
if (ImmLitIdx != -1 && !IsSOPK)
convertFMAanyK(MI, ImmLitIdx);
+ // 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)
+ 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..9907f9e055d5d
--- /dev/null
+++ b/llvm/test/MC/Disassembler/AMDGPU/gfx10_vop3cx_warn.txt
@@ -0,0 +1,403 @@
+# 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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+0x55,0x00,0x37,0xd4,0xf7,0x04,0x02,0x00
+
+### t_i
+# 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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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]
+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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