834cc88c5d
lowerBuildVectorAsBroadcast will not broadcast splat constants in all cases, resulting in a lot of situations where a full width vector load that has failed to fold but is loading splat constant values could use a broadcast load instruction just as cheaply, and save constant pool space. NOTE: SSE3 targets can use MOVDDUP but not all SSE era CPUs can perform this as cheaply as a vector load, we will need to add scheduler model checks if we want to pursue this. This is an updated commit of98061013e0after being reverted ata279a09ab9
130 lines
4.7 KiB
LLVM
130 lines
4.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=avx | FileCheck %s
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@x = common global <8 x float> zeroinitializer, align 32
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@y = common global <4 x double> zeroinitializer, align 32
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@z = common global <4 x float> zeroinitializer, align 16
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define void @zero128() nounwind ssp {
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; CHECK-LABEL: zero128:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: vxorps %xmm0, %xmm0, %xmm0
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; CHECK-NEXT: movq _z@GOTPCREL(%rip), %rax
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; CHECK-NEXT: vmovaps %xmm0, (%rax)
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; CHECK-NEXT: retq
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store <4 x float> zeroinitializer, ptr @z, align 16
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ret void
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}
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define void @zero256() nounwind ssp {
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; CHECK-LABEL: zero256:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: vxorps %xmm0, %xmm0, %xmm0
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; CHECK-NEXT: movq _x@GOTPCREL(%rip), %rax
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; CHECK-NEXT: vmovaps %ymm0, (%rax)
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; CHECK-NEXT: movq _y@GOTPCREL(%rip), %rax
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; CHECK-NEXT: vmovaps %ymm0, (%rax)
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; CHECK-NEXT: vzeroupper
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; CHECK-NEXT: retq
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store <8 x float> zeroinitializer, ptr @x, align 32
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store <4 x double> zeroinitializer, ptr @y, align 32
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ret void
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}
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define void @ones(ptr nocapture %RET, ptr nocapture %aFOO) nounwind {
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; CHECK-LABEL: ones:
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; CHECK: ## %bb.0: ## %allocas
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; CHECK-NEXT: vxorps %xmm0, %xmm0, %xmm0
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; CHECK-NEXT: vcmptrueps %ymm0, %ymm0, %ymm0
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; CHECK-NEXT: vmovaps %ymm0, (%rdi)
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; CHECK-NEXT: vzeroupper
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; CHECK-NEXT: retq
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allocas:
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store <8 x float> <float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float
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0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float
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0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000>, ptr %RET, align 32
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ret void
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}
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define void @ones2(ptr nocapture %RET, ptr nocapture %aFOO) nounwind {
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; CHECK-LABEL: ones2:
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; CHECK: ## %bb.0: ## %allocas
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; CHECK-NEXT: vxorps %xmm0, %xmm0, %xmm0
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; CHECK-NEXT: vcmptrueps %ymm0, %ymm0, %ymm0
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; CHECK-NEXT: vmovaps %ymm0, (%rdi)
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; CHECK-NEXT: vzeroupper
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; CHECK-NEXT: retq
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allocas:
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store <8 x i32> <i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1>, ptr %RET, align 32
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ret void
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}
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;;; Just make sure this doesn't crash
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define <4 x i64> @ISelCrash(<4 x i64> %a) nounwind uwtable readnone ssp {
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; CHECK-LABEL: ISelCrash:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: vextractf128 $1, %ymm0, %xmm0
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; CHECK-NEXT: retq
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%shuffle = shufflevector <4 x i64> %a, <4 x i64> undef, <4 x i32> <i32 2, i32 3, i32 4, i32 4>
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ret <4 x i64> %shuffle
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}
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;;; Don't crash on movd
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define <8 x i32> @VMOVZQI2PQI(ptr nocapture %aFOO) nounwind {
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; CHECK-LABEL: VMOVZQI2PQI:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: vbroadcastss (%rdi), %ymm0
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; CHECK-NEXT: retq
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%val.i34.i = load i32, ptr %aFOO, align 4
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%ptroffset.i22.i992 = getelementptr [0 x float], ptr %aFOO, i64 0, i64 1
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%val.i24.i = load i32, ptr %ptroffset.i22.i992, align 4
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%updatedret.i30.i = insertelement <8 x i32> undef, i32 %val.i34.i, i32 1
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ret <8 x i32> %updatedret.i30.i
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}
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;;;; Don't crash on fneg
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; rdar://10566486
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define <16 x float> @fneg(<16 x float> %a) nounwind {
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; CHECK-LABEL: fneg:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: vbroadcastss {{.*#+}} ymm2 = [-0.0E+0,-0.0E+0,-0.0E+0,-0.0E+0,-0.0E+0,-0.0E+0,-0.0E+0,-0.0E+0]
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; CHECK-NEXT: vxorps %ymm2, %ymm0, %ymm0
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; CHECK-NEXT: vxorps %ymm2, %ymm1, %ymm1
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; CHECK-NEXT: retq
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%1 = fsub <16 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %a
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ret <16 x float> %1
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}
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;;; Don't crash on build vector
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define <16 x i16> @build_vec_16x16(i16 %a) nounwind readonly {
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; CHECK-LABEL: build_vec_16x16:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: movzwl %di, %eax
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; CHECK-NEXT: vmovd %eax, %xmm0
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; CHECK-NEXT: retq
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%res = insertelement <16 x i16> <i16 undef, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>, i16 %a, i32 0
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ret <16 x i16> %res
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}
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;;; Check that VMOVPQIto64rr generates the assembly string "vmovq". Previously
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;;; an incorrect mnemonic of "movd" was printed for this instruction.
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define i64 @VMOVPQIto64rr(<2 x i64> %a) {
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; CHECK-LABEL: VMOVPQIto64rr:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: vmovq %xmm0, %rax
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; CHECK-NEXT: retq
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%vecext.i = extractelement <2 x i64> %a, i32 0
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ret i64 %vecext.i
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}
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; PR22685
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define <8 x float> @mov00_8f32(ptr %ptr) {
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; CHECK-LABEL: mov00_8f32:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: vmovss {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: retq
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%val = load float, ptr %ptr
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%vec = insertelement <8 x float> zeroinitializer, float %val, i32 0
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ret <8 x float> %vec
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}
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