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6b2fa94db0
Optimized sitofp i64 %x to double. The current sequence movl %ecx, 8(%esp) movl %edx, 12(%esp) fildll 8(%esp) is replaced with: movd %ecx, %xmm0 movd %edx, %xmm1 punpckldq %xmm1, %xmm0 movq %xmm0, 8(%esp) Differential Revision: http://reviews.llvm.org/D15946 llvm-svn: 257285
29 lines
1.7 KiB
LLVM
29 lines
1.7 KiB
LLVM
; REQUIRES: asserts
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; RUN: llc < %s -march=x86 -mattr=+sse2 -mtriple=i386-apple-darwin -stats 2>&1 | grep asm-printer | grep 13
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define i32 @t(i8* %ref_frame_ptr, i32 %ref_frame_stride, i32 %idxX, i32 %idxY) nounwind {
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entry:
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%tmp7 = mul i32 %idxY, %ref_frame_stride ; <i32> [#uses=2]
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%tmp9 = add i32 %tmp7, %idxX ; <i32> [#uses=1]
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%tmp11 = getelementptr i8, i8* %ref_frame_ptr, i32 %tmp9 ; <i8*> [#uses=1]
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%tmp1112 = bitcast i8* %tmp11 to i32* ; <i32*> [#uses=1]
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%tmp13 = load i32, i32* %tmp1112, align 4 ; <i32> [#uses=1]
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%tmp18 = add i32 %idxX, 4 ; <i32> [#uses=1]
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%tmp20.sum = add i32 %tmp18, %tmp7 ; <i32> [#uses=1]
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%tmp21 = getelementptr i8, i8* %ref_frame_ptr, i32 %tmp20.sum ; <i8*> [#uses=1]
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%tmp2122 = bitcast i8* %tmp21 to i16* ; <i16*> [#uses=1]
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%tmp23 = load i16, i16* %tmp2122, align 2 ; <i16> [#uses=1]
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%tmp2425 = zext i16 %tmp23 to i64 ; <i64> [#uses=1]
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%tmp26 = shl i64 %tmp2425, 32 ; <i64> [#uses=1]
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%tmp2728 = zext i32 %tmp13 to i64 ; <i64> [#uses=1]
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%tmp29 = or i64 %tmp26, %tmp2728 ; <i64> [#uses=1]
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%tmp3454 = bitcast i64 %tmp29 to double ; <double> [#uses=1]
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%tmp35 = insertelement <2 x double> undef, double %tmp3454, i32 0 ; <<2 x double>> [#uses=1]
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%tmp36 = insertelement <2 x double> %tmp35, double 0.000000e+00, i32 1 ; <<2 x double>> [#uses=1]
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%tmp42 = bitcast <2 x double> %tmp36 to <8 x i16> ; <<8 x i16>> [#uses=1]
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%tmp43 = shufflevector <8 x i16> %tmp42, <8 x i16> undef, <8 x i32> < i32 0, i32 1, i32 1, i32 2, i32 4, i32 5, i32 6, i32 7 > ; <<8 x i16>> [#uses=1]
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%tmp47 = bitcast <8 x i16> %tmp43 to <4 x i32> ; <<4 x i32>> [#uses=1]
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%tmp48 = extractelement <4 x i32> %tmp47, i32 0 ; <i32> [#uses=1]
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ret i32 %tmp48
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}
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