[llvm] [AMDGPU][MC] Fix disassembler warning for v_cmpx instructions in GFX9 (PR #163825)
via llvm-commits
llvm-commits at lists.llvm.org
Thu Oct 16 09:54:18 PDT 2025
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-amdgpu
Author: Jun Wang (jwanggit86)
<details>
<summary>Changes</summary>
In GFX10+, the v_cmpx_* instructions use EXEC as the implicit dst and do not have explicit dst. Therefore a warning is issued by the disassembler when the dst is not EXEC. However, in GFX9 and earlier, those instructions have EXEC as the implicit dst as well as an explicit dst. The aforementioned warning should not be issued.
---
Patch is 47.38 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/163825.diff
3 Files Affected:
- (modified) llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp (+1)
- (added) llvm/test/MC/Disassembler/AMDGPU/gfx8_vop3cx_nowarn.txt (+422)
- (added) llvm/test/MC/Disassembler/AMDGPU/gfx9_vop3c_nowarn.txt (+402)
``````````diff
diff --git a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
index be6239590e7da..fe04f2690a78c 100644
--- a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
+++ b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
@@ -893,6 +893,7 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
// 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()).getNumDefs() == 0 &&
MCII->get(MI.getOpcode()).hasImplicitDefOfPhysReg(AMDGPU::EXEC)) {
auto ExecEncoding = MRI.getEncodingValue(AMDGPU::EXEC_LO);
if (Bytes_[0] != ExecEncoding)
diff --git a/llvm/test/MC/Disassembler/AMDGPU/gfx8_vop3cx_nowarn.txt b/llvm/test/MC/Disassembler/AMDGPU/gfx8_vop3cx_nowarn.txt
new file mode 100644
index 0000000000000..d4888ad4c5755
--- /dev/null
+++ b/llvm/test/MC/Disassembler/AMDGPU/gfx8_vop3cx_nowarn.txt
@@ -0,0 +1,422 @@
+# RUN: llvm-mc -triple=amdgcn -mcpu=tonga -disassemble -show-encoding < %s | FileCheck -strict-whitespace %s
+
+# In GFX10+, v_cmpx_* use EXEC as the implicit dst. The disassembler issues a warning when the dst
+# is not 0x7e (EXEC). In GFX9 and earlier, these instructions have explicit dst. Therefore, such
+# warnings should not be issued.
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_class_f32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0x11,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0x11,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_class_f32_e64 flat_scratch, v1, v2 ; encoding: [0x66,0x00,0x11,0xd0,0x01,0x05,0x02,0x00]
+0x66,0x00,0x11,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_class_f32_e64 vcc, v1, v2 ; encoding: [0x6a,0x00,0x11,0xd0,0x01,0x05,0x02,0x00]
+0x6a,0x00,0x11,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_class_f32_e64 tba, v1, v2 ; encoding: [0x6c,0x00,0x11,0xd0,0x01,0x05,0x02,0x00]
+0x6c,0x00,0x11,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_class_f32_e64 tma, v1, v2 ; encoding: [0x6e,0x00,0x11,0xd0,0x01,0x05,0x02,0x00]
+0x6e,0x00,0x11,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_class_f32_e64 ttmp[10:11], v1, v2 ; encoding: [0x7a,0x00,0x11,0xd0,0x01,0x05,0x02,0x00]
+0x7a,0x00,0x11,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_class_f64_e64 s[0:1], v[1:2], v2 ; encoding: [0x00,0x00,0x13,0xd0,0x01,0x05,0x02,0x00]
+0x00,0x00,0x13,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_class_f16_e64 s[2:3], v1, v2 ; encoding: [0x02,0x00,0x15,0xd0,0x01,0x05,0x02,0x00]
+0x02,0x00,0x15,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_f_f16_e64 s[4:5], v1, v2 ; encoding: [0x04,0x00,0x30,0xd0,0x01,0x05,0x02,0x00]
+0x04,0x00,0x30,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_lt_f16_e64 s[6:7], v1, v2 ; encoding: [0x06,0x00,0x31,0xd0,0x01,0x05,0x02,0x00]
+0x06,0x00,0x31,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_eq_f16_e64 s[8:9], v1, v2 ; encoding: [0x08,0x00,0x32,0xd0,0x01,0x05,0x02,0x00]
+0x08,0x00,0x32,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_le_f16_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0x33,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0x33,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_gt_f16_e64 s[12:13], v1, v2 ; encoding: [0x0c,0x00,0x34,0xd0,0x01,0x05,0x02,0x00]
+0x0c,0x00,0x34,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_lg_f16_e64 s[14:15], v1, v2 ; encoding: [0x0e,0x00,0x35,0xd0,0x01,0x05,0x02,0x00]
+0x0e,0x00,0x35,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ge_f16_e64 s[16:17], v1, v2 ; encoding: [0x10,0x00,0x36,0xd0,0x01,0x05,0x02,0x00]
+0x10,0x00,0x36,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_o_f16_e64 s[18:19], v1, v2 ; encoding: [0x12,0x00,0x37,0xd0,0x01,0x05,0x02,0x00]
+0x12,0x00,0x37,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_u_f16_e64 s[20:21], v1, v2 ; encoding: [0x14,0x00,0x38,0xd0,0x01,0x05,0x02,0x00]
+0x14,0x00,0x38,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nge_f16_e64 s[22:23], v1, v2 ; encoding: [0x16,0x00,0x39,0xd0,0x01,0x05,0x02,0x00]
+0x16,0x00,0x39,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nlg_f16_e64 s[24:25], v1, v2 ; encoding: [0x18,0x00,0x3a,0xd0,0x01,0x05,0x02,0x00]
+0x18,0x00,0x3a,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ngt_f16_e64 s[26:27], v1, v2 ; encoding: [0x1a,0x00,0x3b,0xd0,0x01,0x05,0x02,0x00]
+0x1a,0x00,0x3b,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nle_f16_e64 s[28:29], v1, v2 ; encoding: [0x1c,0x00,0x3c,0xd0,0x01,0x05,0x02,0x00]
+0x1c,0x00,0x3c,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_neq_f16_e64 s[30:31], v1, v2 ; encoding: [0x1e,0x00,0x3d,0xd0,0x01,0x05,0x02,0x00]
+0x1e,0x00,0x3d,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nlt_f16_e64 s[32:33], v1, v2 ; encoding: [0x20,0x00,0x3e,0xd0,0x01,0x05,0x02,0x00]
+0x20,0x00,0x3e,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_tru_f16_e64 s[34:35], v1, v2 ; encoding: [0x22,0x00,0x3f,0xd0,0x01,0x05,0x02,0x00]
+0x22,0x00,0x3f,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_f_f32_e64 s[36:37], v1, v2 ; encoding: [0x24,0x00,0x50,0xd0,0x01,0x05,0x02,0x00]
+0x24,0x00,0x50,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_lt_f32_e64 s[38:39], v1, v2 ; encoding: [0x26,0x00,0x51,0xd0,0x01,0x05,0x02,0x00]
+0x26,0x00,0x51,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_eq_f32_e64 s[40:41], v1, v2 ; encoding: [0x28,0x00,0x52,0xd0,0x01,0x05,0x02,0x00]
+0x28,0x00,0x52,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_le_f32_e64 s[42:43], v1, v2 ; encoding: [0x2a,0x00,0x53,0xd0,0x01,0x05,0x02,0x00]
+0x2a,0x00,0x53,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_gt_f32_e64 s[44:45], v1, v2 ; encoding: [0x2c,0x00,0x54,0xd0,0x01,0x05,0x02,0x00]
+0x2c,0x00,0x54,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_lg_f32_e64 s[46:47], v1, v2 ; encoding: [0x2e,0x00,0x55,0xd0,0x01,0x05,0x02,0x00]
+0x2e,0x00,0x55,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ge_f32_e64 s[48:49], v1, v2 ; encoding: [0x30,0x00,0x56,0xd0,0x01,0x05,0x02,0x00]
+0x30,0x00,0x56,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_o_f32_e64 s[50:51], v1, v2 ; encoding: [0x32,0x00,0x57,0xd0,0x01,0x05,0x02,0x00]
+0x32,0x00,0x57,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_u_f32_e64 s[52:53], v1, v2 ; encoding: [0x34,0x00,0x58,0xd0,0x01,0x05,0x02,0x00]
+0x34,0x00,0x58,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nge_f32_e64 s[54:55], v1, v2 ; encoding: [0x36,0x00,0x59,0xd0,0x01,0x05,0x02,0x00]
+0x36,0x00,0x59,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nlg_f32_e64 s[56:57], v1, v2 ; encoding: [0x38,0x00,0x5a,0xd0,0x01,0x05,0x02,0x00]
+0x38,0x00,0x5a,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ngt_f32_e64 s[58:59], v1, v2 ; encoding: [0x3a,0x00,0x5b,0xd0,0x01,0x05,0x02,0x00]
+0x3a,0x00,0x5b,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nle_f32_e64 s[60:61], v1, v2 ; encoding: [0x3c,0x00,0x5c,0xd0,0x01,0x05,0x02,0x00]
+0x3c,0x00,0x5c,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_neq_f32_e64 s[62:63], v1, v2 ; encoding: [0x3e,0x00,0x5d,0xd0,0x01,0x05,0x02,0x00]
+0x3e,0x00,0x5d,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nlt_f32_e64 s[64:65], v1, v2 ; encoding: [0x40,0x00,0x5e,0xd0,0x01,0x05,0x02,0x00]
+0x40,0x00,0x5e,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_tru_f32_e64 s[66:67], v1, v2 ; encoding: [0x42,0x00,0x5f,0xd0,0x01,0x05,0x02,0x00]
+0x42,0x00,0x5f,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_f_f64_e64 s[68:69], v[1:2], v[2:3] ; encoding: [0x44,0x00,0x70,0xd0,0x01,0x05,0x02,0x00]
+0x44,0x00,0x70,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_lt_f64_e64 s[70:71], v[1:2], v[2:3] ; encoding: [0x46,0x00,0x71,0xd0,0x01,0x05,0x02,0x00]
+0x46,0x00,0x71,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_eq_f64_e64 s[72:73], v[1:2], v[2:3] ; encoding: [0x48,0x00,0x72,0xd0,0x01,0x05,0x02,0x00]
+0x48,0x00,0x72,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_le_f64_e64 s[74:75], v[1:2], v[2:3] ; encoding: [0x4a,0x00,0x73,0xd0,0x01,0x05,0x02,0x00]
+0x4a,0x00,0x73,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_gt_f64_e64 s[76:77], v[1:2], v[2:3] ; encoding: [0x4c,0x00,0x74,0xd0,0x01,0x05,0x02,0x00]
+0x4c,0x00,0x74,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_lg_f64_e64 s[78:79], v[1:2], v[2:3] ; encoding: [0x4e,0x00,0x75,0xd0,0x01,0x05,0x02,0x00]
+0x4e,0x00,0x75,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ge_f64_e64 s[80:81], v[1:2], v[2:3] ; encoding: [0x50,0x00,0x76,0xd0,0x01,0x05,0x02,0x00]
+0x50,0x00,0x76,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_o_f64_e64 s[82:83], v[1:2], v[2:3] ; encoding: [0x52,0x00,0x77,0xd0,0x01,0x05,0x02,0x00]
+0x52,0x00,0x77,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_u_f64_e64 s[84:85], v[1:2], v[2:3] ; encoding: [0x54,0x00,0x78,0xd0,0x01,0x05,0x02,0x00]
+0x54,0x00,0x78,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nge_f64_e64 s[86:87], v[1:2], v[2:3] ; encoding: [0x56,0x00,0x79,0xd0,0x01,0x05,0x02,0x00]
+0x56,0x00,0x79,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nlg_f64_e64 s[88:89], v[1:2], v[2:3] ; encoding: [0x58,0x00,0x7a,0xd0,0x01,0x05,0x02,0x00]
+0x58,0x00,0x7a,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ngt_f64_e64 s[90:91], v[1:2], v[2:3] ; encoding: [0x5a,0x00,0x7b,0xd0,0x01,0x05,0x02,0x00]
+0x5a,0x00,0x7b,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nle_f64_e64 s[92:93], v[1:2], v[2:3] ; encoding: [0x5c,0x00,0x7c,0xd0,0x01,0x05,0x02,0x00]
+0x5c,0x00,0x7c,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_neq_f64_e64 s[94:95], v[1:2], v[2:3] ; encoding: [0x5e,0x00,0x7d,0xd0,0x01,0x05,0x02,0x00]
+0x5e,0x00,0x7d,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_nlt_f64_e64 s[96:97], v[1:2], v[2:3] ; encoding: [0x60,0x00,0x7e,0xd0,0x01,0x05,0x02,0x00]
+0x60,0x00,0x7e,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_tru_f64_e64 s[98:99], v[1:2], v[2:3] ; encoding: [0x62,0x00,0x7f,0xd0,0x01,0x05,0x02,0x00]
+0x62,0x00,0x7f,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_f_i16_e64 s[100:101], v1, v2 ; encoding: [0x64,0x00,0xb0,0xd0,0x01,0x05,0x02,0x00]
+0x64,0x00,0xb0,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_lt_i16_e64 flat_scratch, v1, v2 ; encoding: [0x66,0x00,0xb1,0xd0,0x01,0x05,0x02,0x00]
+0x66,0x00,0xb1,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_eq_i16_e64 xnack_mask, v1, v2 ; encoding: [0x68,0x00,0xb2,0xd0,0x01,0x05,0x02,0x00]
+0x68,0x00,0xb2,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_le_i16_e64 vcc, v1, v2 ; encoding: [0x6a,0x00,0xb3,0xd0,0x01,0x05,0x02,0x00]
+0x6a,0x00,0xb3,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_gt_i16_e64 tba, v1, v2 ; encoding: [0x6c,0x00,0xb4,0xd0,0x01,0x05,0x02,0x00]
+0x6c,0x00,0xb4,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ne_i16_e64 tma, v1, v2 ; encoding: [0x6e,0x00,0xb5,0xd0,0x01,0x05,0x02,0x00]
+0x6e,0x00,0xb5,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ge_i16_e64 ttmp[0:1], v1, v2 ; encoding: [0x70,0x00,0xb6,0xd0,0x01,0x05,0x02,0x00]
+0x70,0x00,0xb6,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_t_i16_e64 ttmp[2:3], v1, v2 ; encoding: [0x72,0x00,0xb7,0xd0,0x01,0x05,0x02,0x00]
+0x72,0x00,0xb7,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_f_u16_e64 ttmp[4:5], v1, v2 ; encoding: [0x74,0x00,0xb8,0xd0,0x01,0x05,0x02,0x00]
+0x74,0x00,0xb8,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_lt_u16_e64 ttmp[6:7], v1, v2 ; encoding: [0x76,0x00,0xb9,0xd0,0x01,0x05,0x02,0x00]
+0x76,0x00,0xb9,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_eq_u16_e64 ttmp[8:9], v1, v2 ; encoding: [0x78,0x00,0xba,0xd0,0x01,0x05,0x02,0x00]
+0x78,0x00,0xba,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_le_u16_e64 ttmp[10:11], v1, v2 ; encoding: [0x7a,0x00,0xbb,0xd0,0x01,0x05,0x02,0x00]
+0x7a,0x00,0xbb,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_gt_u16_e64 exec, v1, v2 ; encoding: [0x7e,0x00,0xbc,0xd0,0x01,0x05,0x02,0x00]
+0x7e,0x00,0xbc,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ne_u16_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xbd,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xbd,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ge_u16_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xbe,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xbe,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_t_u16_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xbf,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xbf,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_f_i32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xd0,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xd0,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_lt_i32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xd1,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xd1,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_eq_i32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xd2,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xd2,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_le_i32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xd3,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xd3,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_gt_i32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xd4,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xd4,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ne_i32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xd5,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xd5,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_ge_i32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xd6,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xd6,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_t_i32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xd7,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xd7,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_f_u32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xd8,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xd8,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_lt_u32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xd9,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xd9,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# CHECK: v_cmpx_eq_u32_e64 s[10:11], v1, v2 ; encoding: [0x0a,0x00,0xda,0xd0,0x01,0x05,0x02,0x00]
+0x0a,0x00,0xda,0xd0,0x01,0x05,0x02,0x00
+
+# CHECK-NOT: [[@LINE+2]]:1: warning: potentially undefined instruction encoding
+# C...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/163825
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