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fdbcd2084e
We need to clean up the DAG floating-point undef logic. This process is similar to how we handled integer undef logic in https://reviews.llvm.org/D43141. And as we did there, I'm trying to reduce the patch by changing tests that would probably become meaningless once we correct FP undef folding. llvm-svn: 332638
67 lines
3.8 KiB
LLVM
67 lines
3.8 KiB
LLVM
; RUN: llc -mcpu=cortex-a8 -mattr=-neonfp -arm-atomic-cfg-tidy=0 < %s | FileCheck %s
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; PR5423
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64"
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target triple = "armv7-eabi"
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define arm_aapcs_vfpcc void @foo() {
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entry:
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%0 = load float, float* null, align 4 ; <float> [#uses=2]
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%1 = fmul float %0, %0 ; <float> [#uses=2]
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%2 = fmul float 0.000000e+00, %1 ; <float> [#uses=2]
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%3 = fmul float %0, %1 ; <float> [#uses=1]
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%4 = fadd float 0.000000e+00, %3 ; <float> [#uses=1]
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%5 = fsub float 1.000000e+00, %4 ; <float> [#uses=1]
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; CHECK-LABEL: foo:
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; CHECK: vmov.f32 s{{[0-9]+}}, #1.000000e+00
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%6 = fsub float 1.000000e+00, %2 ; <float> [#uses=2]
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%7 = fsub float %2, %2 ; <float> [#uses=1]
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%8 = fsub float 0.000000e+00, %7 ; <float> [#uses=3]
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%9 = fadd float %2, %2 ; <float> [#uses=3]
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%10 = load float, float* undef, align 8 ; <float> [#uses=3]
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%11 = fmul float %8, %10 ; <float> [#uses=1]
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%12 = fadd float %11, %11 ; <float> [#uses=2]
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%13 = fmul float %12, %12 ; <float> [#uses=1]
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%14 = fmul float %6, 0.000000e+00 ; <float> [#uses=1]
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%15 = fadd float %13, %14 ; <float> [#uses=1]
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%16 = fmul float %9, %10 ; <float> [#uses=1]
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%17 = fadd float %15, %16 ; <float> [#uses=2]
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%18 = fmul float 0.000000e+00, %17 ; <float> [#uses=1]
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%19 = fadd float %18, 0.000000e+00 ; <float> [#uses=1]
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%20 = fmul float %10, %10 ; <float> [#uses=1]
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%21 = fadd float %19, %20 ; <float> [#uses=1]
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%22 = load float, float* undef, align 8 ; <float> [#uses=1]
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%23 = fmul float %5, %22 ; <float> [#uses=1]
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%24 = fadd float %23, %23 ; <float> [#uses=1]
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%25 = load float, float* undef, align 8 ; <float> [#uses=2]
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%26 = fmul float %8, %25 ; <float> [#uses=1]
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%27 = fadd float %24, %26 ; <float> [#uses=1]
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%28 = fmul float %9, %25 ; <float> [#uses=1]
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%29 = fadd float %28, %28 ; <float> [#uses=1]
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%30 = fmul float %8, undef ; <float> [#uses=1]
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%31 = fadd float %30, %30 ; <float> [#uses=1]
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%32 = fmul float %6, %6 ; <float> [#uses=1]
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%33 = fadd float %32, %32 ; <float> [#uses=1]
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%34 = fmul float %9, %9 ; <float> [#uses=1]
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%35 = fadd float %33, %34 ; <float> [#uses=1]
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%36 = fmul float 0.000000e+00, undef ; <float> [#uses=1]
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%37 = fmul float %7, %7 ; <float> [#uses=1]
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%38 = fadd float %36, %37 ; <float> [#uses=1]
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%39 = fmul float %38, %38 ; <float> [#uses=1]
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%40 = fadd float %38, %39 ; <float> [#uses=1]
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store float %12, float* undef, align 8
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store float %17, float* undef, align 4
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store float %21, float* undef, align 8
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store float %27, float* undef, align 8
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store float %29, float* undef, align 4
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store float %31, float* undef, align 8
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store float %40, float* undef, align 8
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store float %12, float* null, align 8
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%41 = fmul float %17, %17 ; <float> [#uses=1]
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%42 = fadd float %41, %41 ; <float> [#uses=1]
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%43 = fmul float %35, %35 ; <float> [#uses=1]
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%44 = fadd float %42, %43 ; <float> [#uses=1]
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store float %44, float* null, align 4
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unreachable
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}
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