[llvm] fcce308 - [X86][AVX10.2] Fix unexpected larger scope (#130767)

[via llvm-commits]

Author: Phoebe Wang
Date: 2025-03-11T21:20:27+08:00
New Revision: fcce3084cb43a12f2e6e19b8e5b655f3df8739d6

URL: https://github.com/llvm/llvm-project/commit/fcce3084cb43a12f2e6e19b8e5b655f3df8739d6
DIFF: https://github.com/llvm/llvm-project/commit/fcce3084cb43a12f2e6e19b8e5b655f3df8739d6.diff

LOG: [X86][AVX10.2] Fix unexpected larger scope (#130767)

https://godbolt.org/z/oM6bcqEnr

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86InstrSSE.td
    llvm/test/CodeGen/X86/avx10_2_512ni-intrinsics.ll

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/X86/X86InstrSSE.td b/llvm/lib/Target/X86/X86InstrSSE.td
index 6aadb788c851e..2a7ab1e310618 100644
--- a/llvm/lib/Target/X86/X86InstrSSE.td
+++ b/llvm/lib/Target/X86/X86InstrSSE.td
@@ -6121,8 +6121,9 @@ let Predicates = [HasAVX, NoAVX10_2] in {
                                     v8i16, VR128, load, i128mem, 0,
                                     SchedWriteMPSAD.XMM>, VEX, VVVV, WIG;
   }
+}
 
-let Uses = [MXCSR], mayRaiseFPException = 1 in {
+let Predicates = [HasAVX], Uses = [MXCSR], mayRaiseFPException = 1 in {
   let ExeDomain = SSEPackedSingle in
   defm VDPPS : SS41I_binop_rmi_int<0x40, "vdpps", int_x86_sse41_dpps,
                                    VR128, load, f128mem, 0,
@@ -6136,7 +6137,6 @@ let Uses = [MXCSR], mayRaiseFPException = 1 in {
                                     VR256, load, i256mem, 0,
                                     SchedWriteDPPS.YMM>, VEX, VVVV, VEX_L, WIG;
 }
-}
 
 let Predicates = [HasAVX2, NoAVX10_2] in {
   let isCommutable = 0 in {

diff  --git a/llvm/test/CodeGen/X86/avx10_2_512ni-intrinsics.ll b/llvm/test/CodeGen/X86/avx10_2_512ni-intrinsics.ll
index 07e86cb01e133..b2e7caa15944c 100644
--- a/llvm/test/CodeGen/X86/avx10_2_512ni-intrinsics.ll
+++ b/llvm/test/CodeGen/X86/avx10_2_512ni-intrinsics.ll
@@ -422,3 +422,14 @@ define { <32 x i16>, <32 x i16>, <32 x i16> } @test_mm512_mask_mpsadbw(<64 x i8>
 }
 
 declare <32 x i16> @llvm.x86.avx10.vmpsadbw.512(<64 x i8>, <64 x i8>, i8)
+
+; Regression test
+
+define <8 x float> @avx_dp_ps(<8 x float> %a, <8 x float> %b) {
+; CHECK-LABEL: avx_dp_ps:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vdpps $255, %ymm1, %ymm0, %ymm0 # encoding: [0xc4,0xe3,0x7d,0x40,0xc1,0xff]
+; CHECK-NEXT:    ret{{[l|q]}} # encoding: [0xc3]
+  %r = tail call <8 x float> @llvm.x86.avx.dp.ps.256(<8 x float> %a, <8 x float> %b, i8 -1)
+  ret <8 x float> %r
+}