llvm.org GIT mirror llvm / release_90 test / CodeGen / X86 / movmsk.ll
release_90

Tree @release_90 (Download .tar.gz)

movmsk.ll @release_90raw · history · blame

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-apple-macosx10.6.6 -mattr=+sse4.1 | FileCheck %s

%0 = type { double }
%union.anon = type { float }

define i32 @double_signbit(double %d1) nounwind uwtable readnone ssp {
; CHECK-LABEL: double_signbit:
; CHECK:       ## %bb.0: ## %entry
; CHECK-NEXT:    movsd %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movsd %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movmskpd %xmm0, %eax
; CHECK-NEXT:    andl $1, %eax
; CHECK-NEXT:    retq
entry:
  %__x.addr.i = alloca double, align 8
  %__u.i = alloca %0, align 8
  %0 = bitcast double* %__x.addr.i to i8*
  %1 = bitcast %0* %__u.i to i8*
  store double %d1, double* %__x.addr.i, align 8
  %__f.i = getelementptr inbounds %0, %0* %__u.i, i64 0, i32 0
  store double %d1, double* %__f.i, align 8
  %tmp = bitcast double %d1 to i64
  %tmp1 = lshr i64 %tmp, 63
  %shr.i = trunc i64 %tmp1 to i32
  ret i32 %shr.i
}

define i32 @double_add_signbit(double %d1, double %d2) nounwind uwtable readnone ssp {
; CHECK-LABEL: double_add_signbit:
; CHECK:       ## %bb.0: ## %entry
; CHECK-NEXT:    addsd %xmm1, %xmm0
; CHECK-NEXT:    movsd %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movsd %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movmskpd %xmm0, %eax
; CHECK-NEXT:    andl $1, %eax
; CHECK-NEXT:    retq
entry:
  %__x.addr.i = alloca double, align 8
  %__u.i = alloca %0, align 8
  %add = fadd double %d1, %d2
  %0 = bitcast double* %__x.addr.i to i8*
  %1 = bitcast %0* %__u.i to i8*
  store double %add, double* %__x.addr.i, align 8
  %__f.i = getelementptr inbounds %0, %0* %__u.i, i64 0, i32 0
  store double %add, double* %__f.i, align 8
  %tmp = bitcast double %add to i64
  %tmp1 = lshr i64 %tmp, 63
  %shr.i = trunc i64 %tmp1 to i32
  ret i32 %shr.i
}

define i32 @float_signbit(float %f1) nounwind uwtable readnone ssp {
; CHECK-LABEL: float_signbit:
; CHECK:       ## %bb.0: ## %entry
; CHECK-NEXT:    movss %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movss %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movmskps %xmm0, %eax
; CHECK-NEXT:    andl $1, %eax
; CHECK-NEXT:    retq
entry:
  %__x.addr.i = alloca float, align 4
  %__u.i = alloca %union.anon, align 4
  %0 = bitcast float* %__x.addr.i to i8*
  %1 = bitcast %union.anon* %__u.i to i8*
  store float %f1, float* %__x.addr.i, align 4
  %__f.i = getelementptr inbounds %union.anon, %union.anon* %__u.i, i64 0, i32 0
  store float %f1, float* %__f.i, align 4
  %2 = bitcast float %f1 to i32
  %shr.i = lshr i32 %2, 31
  ret i32 %shr.i
}

define i32 @float_add_signbit(float %f1, float %f2) nounwind uwtable readnone ssp {
; CHECK-LABEL: float_add_signbit:
; CHECK:       ## %bb.0: ## %entry
; CHECK-NEXT:    addss %xmm1, %xmm0
; CHECK-NEXT:    movss %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movss %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movmskps %xmm0, %eax
; CHECK-NEXT:    andl $1, %eax
; CHECK-NEXT:    retq
entry:
  %__x.addr.i = alloca float, align 4
  %__u.i = alloca %union.anon, align 4
  %add = fadd float %f1, %f2
  %0 = bitcast float* %__x.addr.i to i8*
  %1 = bitcast %union.anon* %__u.i to i8*
  store float %add, float* %__x.addr.i, align 4
  %__f.i = getelementptr inbounds %union.anon, %union.anon* %__u.i, i64 0, i32 0
  store float %add, float* %__f.i, align 4
  %2 = bitcast float %add to i32
  %shr.i = lshr i32 %2, 31
  ret i32 %shr.i
}

; PR11570
define void @float_call_signbit(double %n) {
; CHECK-LABEL: float_call_signbit:
; CHECK:       ## %bb.0: ## %entry
; CHECK-NEXT:    movmskpd %xmm0, %edi
; CHECK-NEXT:    andl $1, %edi
; CHECK-NEXT:    jmp _float_call_signbit_callee ## TAILCALL
entry:
  %t0 = bitcast double %n to i64
  %tobool.i.i.i.i = icmp slt i64 %t0, 0
  tail call void @float_call_signbit_callee(i1 zeroext %tobool.i.i.i.i)
  ret void
}
declare void @float_call_signbit_callee(i1 zeroext)

; Known zeros
define i32 @knownbits_v2f64(<2 x double> %x) {
; CHECK-LABEL: knownbits_v2f64:
; CHECK:       ## %bb.0:
; CHECK-NEXT:    movmskpd %xmm0, %eax
; CHECK-NEXT:    retq
  %1 = tail call i32 @llvm.x86.sse2.movmsk.pd(<2 x double> %x)
  %2 = and i32 %1, 3
  ret i32 %2
}

; Don't demand any movmsk signbits -> zero
define i32 @demandedbits_v16i8(<16 x i8> %x) {
; CHECK-LABEL: demandedbits_v16i8:
; CHECK:       ## %bb.0:
; CHECK-NEXT:    xorl %eax, %eax
; CHECK-NEXT:    retq
  %1 = tail call i32 @llvm.x86.sse2.pmovmskb.128(<16 x i8> %x)
  %2 = and i32 %1, 65536
  ret i32 %2
}

; Simplify demanded vector elts
define i32 @demandedelts_v4f32(<4 x float> %x) {
; CHECK-LABEL: demandedelts_v4f32:
; CHECK:       ## %bb.0:
; CHECK-NEXT:    movmskps %xmm0, %eax
; CHECK-NEXT:    andl $1, %eax
; CHECK-NEXT:    retq
  %1 = shufflevector <4 x float> %x, <4 x float> undef, <4 x i32> zeroinitializer
  %2 = tail call i32 @llvm.x86.sse.movmsk.ps(<4 x float> %1)
  %3 = and i32 %2, 1
  ret i32 %3
}

; rdar://10247336
; movmskp{s|d} only set low 4/2 bits, high bits are known zero

define i32 @t1(<4 x float> %x, i32* nocapture %indexTable) nounwind uwtable readonly ssp {
; CHECK-LABEL: t1:
; CHECK:       ## %bb.0: ## %entry
; CHECK-NEXT:    movmskps %xmm0, %eax
; CHECK-NEXT:    movl (%rdi,%rax,4), %eax
; CHECK-NEXT:    retq
entry:
  %0 = tail call i32 @llvm.x86.sse.movmsk.ps(<4 x float> %x) nounwind
  %idxprom = sext i32 %0 to i64
  %arrayidx = getelementptr inbounds i32, i32* %indexTable, i64 %idxprom
  %1 = load i32, i32* %arrayidx, align 4
  ret i32 %1
}

define i32 @t2(<4 x float> %x, i32* nocapture %indexTable) nounwind uwtable readonly ssp {
; CHECK-LABEL: t2:
; CHECK:       ## %bb.0: ## %entry
; CHECK-NEXT:    movmskpd %xmm0, %eax
; CHECK-NEXT:    movl (%rdi,%rax,4), %eax
; CHECK-NEXT:    retq
entry:
  %0 = bitcast <4 x float> %x to <2 x double>
  %1 = tail call i32 @llvm.x86.sse2.movmsk.pd(<2 x double> %0) nounwind
  %idxprom = sext i32 %1 to i64
  %arrayidx = getelementptr inbounds i32, i32* %indexTable, i64 %idxprom
  %2 = load i32, i32* %arrayidx, align 4
  ret i32 %2
}

declare i32 @llvm.x86.sse2.pmovmskb.128(<16 x i8>) nounwind readnone
declare i32 @llvm.x86.sse2.movmsk.pd(<2 x double>) nounwind readnone
declare i32 @llvm.x86.sse.movmsk.ps(<4 x float>) nounwind readnone