53 lines
1.8 KiB
LLVM
53 lines
1.8 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-- -mattr=+sse4.1 | FileCheck %s --check-prefixes=CHECK,SSE
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; RUN: llc < %s -mtriple=x86_64-- -mattr=+avx2 | FileCheck %s --check-prefixes=CHECK,AVX
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define i16 @mulhs(i16 %a0, i16 %a1) {
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; CHECK-LABEL: mulhs:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movswl %si, %ecx
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; CHECK-NEXT: movswl %di, %eax
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; CHECK-NEXT: imull %ecx, %eax
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; CHECK-NEXT: shrl $16, %eax
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; CHECK-NEXT: # kill: def $ax killed $ax killed $eax
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; CHECK-NEXT: retq
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%x0 = sext i16 %a0 to i32
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%x1 = sext i16 %a1 to i32
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%v0 = insertelement <1 x i32> <i32 undef>, i32 %x0, i32 0
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%v1 = insertelement <1 x i32> <i32 undef>, i32 %x1, i32 0
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%mul = mul nsw <1 x i32> %v0, %v1
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%lshr = lshr <1 x i32> %mul, <i32 16>
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%trunc = trunc <1 x i32> %lshr to <1 x i16>
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%res = extractelement <1 x i16> %trunc, i32 0
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ret i16 %res
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}
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define i16 @mulhu(i16 %a0, i16 %a1) {
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; SSE-LABEL: mulhu:
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; SSE: # %bb.0:
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; SSE-NEXT: movzwl %si, %ecx
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; SSE-NEXT: movzwl %di, %eax
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; SSE-NEXT: imull %ecx, %eax
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; SSE-NEXT: shrl $16, %eax
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; SSE-NEXT: # kill: def $ax killed $ax killed $eax
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; SSE-NEXT: retq
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;
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; AVX-LABEL: mulhu:
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; AVX: # %bb.0:
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; AVX-NEXT: vmovd %edi, %xmm0
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; AVX-NEXT: vmovd %esi, %xmm1
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; AVX-NEXT: vpmulhuw %xmm1, %xmm0, %xmm0
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; AVX-NEXT: vmovd %xmm0, %eax
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; AVX-NEXT: # kill: def $ax killed $ax killed $eax
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; AVX-NEXT: retq
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%x0 = zext i16 %a0 to i32
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%x1 = zext i16 %a1 to i32
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%v0 = insertelement <1 x i32> <i32 undef>, i32 %x0, i32 0
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%v1 = insertelement <1 x i32> <i32 undef>, i32 %x1, i32 0
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%mul = mul nsw <1 x i32> %v0, %v1
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%lshr = lshr <1 x i32> %mul, <i32 16>
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%trunc = trunc <1 x i32> %lshr to <1 x i16>
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%res = extractelement <1 x i16> %trunc, i32 0
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ret i16 %res
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}
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