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https://github.com/c64scene-ar/llvm-6502.git
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8f027c7fea
a specialized pass that it not likely to be generally useful. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58732 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
1.7 KiB
LLVM
42 lines
1.7 KiB
LLVM
; RUN: llvm-as < %s | opt -simplify-libcalls-halfpowr | llvm-dis | %prcontext {mul float} 1 | grep {mul float} | count 8
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define float @__half_powrf4(float %f, float %g) nounwind readnone {
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entry:
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%0 = fcmp olt float %f, 2.000000e+00 ; <i1> [#uses=1]
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br i1 %0, label %bb, label %bb1
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bb: ; preds = %entry
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%1 = fdiv float %f, 3.000000e+00 ; <float> [#uses=1]
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br label %bb1
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bb1: ; preds = %bb, %entry
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%f_addr.0 = phi float [ %1, %bb ], [ %f, %entry ] ; <float> [#uses=1]
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%2 = mul float %f_addr.0, %g ; <float> [#uses=1]
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ret float %2
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}
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define void @foo(float* %p) nounwind {
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entry:
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%0 = load float* %p, align 4 ; <float> [#uses=1]
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%1 = getelementptr float* %p, i32 1 ; <float*> [#uses=1]
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%2 = load float* %1, align 4 ; <float> [#uses=1]
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%3 = getelementptr float* %p, i32 2 ; <float*> [#uses=1]
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%4 = load float* %3, align 4 ; <float> [#uses=1]
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%5 = getelementptr float* %p, i32 3 ; <float*> [#uses=1]
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%6 = load float* %5, align 4 ; <float> [#uses=1]
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%7 = getelementptr float* %p, i32 4 ; <float*> [#uses=1]
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%8 = load float* %7, align 4 ; <float> [#uses=1]
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%9 = getelementptr float* %p, i32 5 ; <float*> [#uses=1]
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%10 = load float* %9, align 4 ; <float> [#uses=1]
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%11 = tail call float @__half_powrf4(float %0, float %6) nounwind ; <float> [#uses=1]
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%12 = tail call float @__half_powrf4(float %2, float %8) nounwind ; <float> [#uses=1]
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%13 = tail call float @__half_powrf4(float %4, float %10) nounwind ; <float> [#uses=1]
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%14 = getelementptr float* %p, i32 6 ; <float*> [#uses=1]
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store float %11, float* %14, align 4
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%15 = getelementptr float* %p, i32 7 ; <float*> [#uses=1]
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store float %12, float* %15, align 4
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%16 = getelementptr float* %p, i32 8 ; <float*> [#uses=1]
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store float %13, float* %16, align 4
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ret void
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}
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