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llvm-mirror/test/CodeGen/X86/avx-cvt.ll
Benjamin Kramer 790bd5fb50 X86: Promote sitofp <8 x i16> to <8 x i32> when AVX is available.
A vector sext + sitofp is a lot cheaper than 8 scalar conversions.

llvm-svn: 178448
2013-03-31 12:49:15 +00:00

90 lines
2.1 KiB
LLVM

; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx -mattr=+avx | FileCheck %s
; CHECK: vcvtdq2ps %ymm
define <8 x float> @sitofp00(<8 x i32> %a) nounwind {
%b = sitofp <8 x i32> %a to <8 x float>
ret <8 x float> %b
}
; CHECK: vcvttps2dq %ymm
define <8 x i32> @fptosi00(<8 x float> %a) nounwind {
%b = fptosi <8 x float> %a to <8 x i32>
ret <8 x i32> %b
}
; CHECK: vcvtdq2pd %xmm
define <4 x double> @sitofp01(<4 x i32> %a) {
%b = sitofp <4 x i32> %a to <4 x double>
ret <4 x double> %b
}
; CHECK: vcvtdq2ps %ymm
define <8 x float> @sitofp02(<8 x i16> %a) {
%b = sitofp <8 x i16> %a to <8 x float>
ret <8 x float> %b
}
; CHECK: vcvttpd2dqy %ymm
define <4 x i32> @fptosi01(<4 x double> %a) {
%b = fptosi <4 x double> %a to <4 x i32>
ret <4 x i32> %b
}
; CHECK: vcvtpd2psy %ymm
; CHECK-NEXT: vcvtpd2psy %ymm
; CHECK-NEXT: vinsertf128 $1
define <8 x float> @fptrunc00(<8 x double> %b) nounwind {
%a = fptrunc <8 x double> %b to <8 x float>
ret <8 x float> %a
}
; CHECK: vcvtps2pd %xmm
define <4 x double> @fpext00(<4 x float> %b) nounwind {
%a = fpext <4 x float> %b to <4 x double>
ret <4 x double> %a
}
; CHECK: vcvtsi2sdq (%
define double @funcA(i64* nocapture %e) nounwind uwtable readonly ssp {
entry:
%tmp1 = load i64* %e, align 8
%conv = sitofp i64 %tmp1 to double
ret double %conv
}
; CHECK: vcvtsi2sdl (%
define double @funcB(i32* nocapture %e) nounwind uwtable readonly ssp {
entry:
%tmp1 = load i32* %e, align 4
%conv = sitofp i32 %tmp1 to double
ret double %conv
}
; CHECK: vcvtsi2ssl (%
define float @funcC(i32* nocapture %e) nounwind uwtable readonly ssp {
entry:
%tmp1 = load i32* %e, align 4
%conv = sitofp i32 %tmp1 to float
ret float %conv
}
; CHECK: vcvtsi2ssq (%
define float @funcD(i64* nocapture %e) nounwind uwtable readonly ssp {
entry:
%tmp1 = load i64* %e, align 8
%conv = sitofp i64 %tmp1 to float
ret float %conv
}
; CHECK: vcvtss2sd
define void @fpext() nounwind uwtable {
entry:
%f = alloca float, align 4
%d = alloca double, align 8
%tmp = load float* %f, align 4
%conv = fpext float %tmp to double
store double %conv, double* %d, align 8
ret void
}