diff options
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelDAGToDAG.cpp | 3 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/nontemporal-loads.ll | 32 |
2 files changed, 35 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp index f8ec4a2bcfc..ede1c0bd7df 100644 --- a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -441,6 +441,9 @@ namespace { switch (StoreSize) { default: llvm_unreachable("Unsupported store size"); + case 4: + case 8: + return false; case 16: return Subtarget->hasSSE41(); case 32: diff --git a/llvm/test/CodeGen/X86/nontemporal-loads.ll b/llvm/test/CodeGen/X86/nontemporal-loads.ll index 37ff7115ac9..56428979568 100644 --- a/llvm/test/CodeGen/X86/nontemporal-loads.ll +++ b/llvm/test/CodeGen/X86/nontemporal-loads.ll @@ -1911,4 +1911,36 @@ define <16 x i32> @test_masked_v16i32(i8 * %addr, <16 x i32> %old, <16 x i32> %m ret <16 x i32>%res } +; Reduced from https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=10895 +define i32 @PR39256(float* %ptr) { +; SSE-LABEL: PR39256: +; SSE: # %bb.0: # %entry +; SSE-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero +; SSE-NEXT: ucomiss {{.*}}(%rip), %xmm0 +; SSE-NEXT: setb (%rax) +; SSE-NEXT: movl $-2147483648, %eax # imm = 0x80000000 +; SSE-NEXT: retq +; +; AVX-LABEL: PR39256: +; AVX: # %bb.0: # %entry +; AVX-NEXT: vmovss {{.*#+}} xmm0 = mem[0],zero,zero,zero +; AVX-NEXT: vucomiss {{.*}}(%rip), %xmm0 +; AVX-NEXT: setb (%rax) +; AVX-NEXT: movl $-2147483648, %eax # imm = 0x80000000 +; AVX-NEXT: retq +; +; AVX512-LABEL: PR39256: +; AVX512: # %bb.0: # %entry +; AVX512-NEXT: vmovss {{.*#+}} xmm0 = mem[0],zero,zero,zero +; AVX512-NEXT: vucomiss {{.*}}(%rip), %xmm0 +; AVX512-NEXT: setb (%rax) +; AVX512-NEXT: movl $-2147483648, %eax # imm = 0x80000000 +; AVX512-NEXT: retq +entry: + %l = load float, float* %ptr, !nontemporal !1 + %C = fcmp ult float %l, 0x36A0000000000000 + store i1 %C, i1* undef + ret i32 -2147483648 +} + !1 = !{i32 1} |
