mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-26 21:32:10 +00:00
58 lines
3.5 KiB
LLVM
58 lines
3.5 KiB
LLVM
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; RUN: llvm-as < %s | llc
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target triple = "x86_64-mingw"
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; ModuleID = 'mm.bc'
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type opaque ; type %0
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type opaque ; type %1
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define internal fastcc float @computeMipmappingRho(%0* %shaderExecutionStatePtr, i32 %index, <4 x float> %texCoord, <4 x float> %texCoordDX, <4 x float> %texCoordDY) readonly {
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indexCheckBlock:
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%indexCmp = icmp ugt i32 %index, 16 ; <i1> [#uses=1]
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br i1 %indexCmp, label %zeroReturnBlock, label %primitiveTextureFetchBlock
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primitiveTextureFetchBlock: ; preds = %indexCheckBlock
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%pointerArithmeticTmp = bitcast %0* %shaderExecutionStatePtr to i8* ; <i8*> [#uses=1]
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%pointerArithmeticTmp1 = getelementptr i8* %pointerArithmeticTmp, i64 1808 ; <i8*> [#uses=1]
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%pointerArithmeticTmp2 = bitcast i8* %pointerArithmeticTmp1 to %1** ; <%1**> [#uses=1]
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%primitivePtr = load %1** %pointerArithmeticTmp2 ; <%1*> [#uses=1]
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%pointerArithmeticTmp3 = bitcast %1* %primitivePtr to i8* ; <i8*> [#uses=1]
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%pointerArithmeticTmp4 = getelementptr i8* %pointerArithmeticTmp3, i64 19408 ; <i8*> [#uses=1]
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%pointerArithmeticTmp5 = bitcast i8* %pointerArithmeticTmp4 to %1** ; <%1**> [#uses=1]
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%primitiveTexturePtr = getelementptr %1** %pointerArithmeticTmp5, i32 %index ; <%1**> [#uses=1]
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%primitiveTexturePtr6 = load %1** %primitiveTexturePtr ; <%1*> [#uses=2]
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br label %textureCheckBlock
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textureCheckBlock: ; preds = %primitiveTextureFetchBlock
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%texturePtrInt = ptrtoint %1* %primitiveTexturePtr6 to i64 ; <i64> [#uses=1]
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%testTextureNULL = icmp eq i64 %texturePtrInt, 0 ; <i1> [#uses=1]
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br i1 %testTextureNULL, label %zeroReturnBlock, label %rhoCalculateBlock
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rhoCalculateBlock: ; preds = %textureCheckBlock
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%pointerArithmeticTmp7 = bitcast %1* %primitiveTexturePtr6 to i8* ; <i8*> [#uses=1]
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%pointerArithmeticTmp8 = getelementptr i8* %pointerArithmeticTmp7, i64 640 ; <i8*> [#uses=1]
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%pointerArithmeticTmp9 = bitcast i8* %pointerArithmeticTmp8 to <4 x float>* ; <<4 x float>*> [#uses=1]
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%dimensionsPtr = load <4 x float>* %pointerArithmeticTmp9, align 1 ; <<4 x float>> [#uses=2]
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%texDiffDX = fsub <4 x float> %texCoordDX, %texCoord ; <<4 x float>> [#uses=1]
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%texDiffDY = fsub <4 x float> %texCoordDY, %texCoord ; <<4 x float>> [#uses=1]
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%ddx = fmul <4 x float> %texDiffDX, %dimensionsPtr ; <<4 x float>> [#uses=2]
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%ddx10 = fmul <4 x float> %texDiffDY, %dimensionsPtr ; <<4 x float>> [#uses=2]
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%ddxSquared = fmul <4 x float> %ddx, %ddx ; <<4 x float>> [#uses=3]
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%0 = shufflevector <4 x float> %ddxSquared, <4 x float> %ddxSquared, <4 x i32> <i32 1, i32 0, i32 0, i32 0> ; <<4 x float>> [#uses=1]
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%dxSquared = fadd <4 x float> %ddxSquared, %0 ; <<4 x float>> [#uses=1]
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%1 = call <4 x float> @llvm.x86.sse.sqrt.ss(<4 x float> %dxSquared) ; <<4 x float>> [#uses=1]
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%ddySquared = fmul <4 x float> %ddx10, %ddx10 ; <<4 x float>> [#uses=3]
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%2 = shufflevector <4 x float> %ddySquared, <4 x float> %ddySquared, <4 x i32> <i32 1, i32 0, i32 0, i32 0> ; <<4 x float>> [#uses=1]
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%dySquared = fadd <4 x float> %ddySquared, %2 ; <<4 x float>> [#uses=1]
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%3 = call <4 x float> @llvm.x86.sse.sqrt.ss(<4 x float> %dySquared) ; <<4 x float>> [#uses=1]
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%4 = call <4 x float> @llvm.x86.sse.max.ss(<4 x float> %1, <4 x float> %3) ; <<4 x float>> [#uses=1]
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%rho = extractelement <4 x float> %4, i32 0 ; <float> [#uses=1]
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ret float %rho
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zeroReturnBlock: ; preds = %textureCheckBlock, %indexCheckBlock
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ret float 0.000000e+00
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}
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declare <4 x float> @llvm.x86.sse.sqrt.ss(<4 x float>) nounwind readnone
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declare <4 x float> @llvm.x86.sse.max.ss(<4 x float>, <4 x float>) nounwind readnone
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