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106 lines
2.9 KiB
106 lines
2.9 KiB
; RUN: opt -gvn-hoist -newgvn -S < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@GlobalVar = internal global float 1.000000e+00
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; Check that we hoist load and scalar expressions in dominator.
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; CHECK-LABEL: @dominatorHoisting
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; CHECK: load
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; CHECK: load
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; CHECK: fsub
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; CHECK: fmul
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; CHECK: load
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; CHECK: fsub
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; CHECK: fmul
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; CHECK-NOT: load
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; CHECK-NOT: fmul
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; CHECK-NOT: fsub
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define float @dominatorHoisting(float %d, float* %min, float* %max, float* %a) {
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entry:
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%div = fdiv float 1.000000e+00, %d
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%0 = load float, float* %min, align 4
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%1 = load float, float* %a, align 4
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%sub = fsub float %0, %1
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%mul = fmul float %sub, %div
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%2 = load float, float* %max, align 4
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%sub1 = fsub float %2, %1
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%mul2 = fmul float %sub1, %div
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%cmp = fcmp oge float %div, 0.000000e+00
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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%3 = load float, float* %max, align 4
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%4 = load float, float* %a, align 4
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%sub3 = fsub float %3, %4
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%mul4 = fmul float %sub3, %div
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%5 = load float, float* %min, align 4
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%sub5 = fsub float %5, %4
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%mul6 = fmul float %sub5, %div
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br label %if.end
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if.end: ; preds = %entry
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%p1 = phi float [ %mul4, %if.then ], [ 0.000000e+00, %entry ]
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%p2 = phi float [ %mul6, %if.then ], [ 0.000000e+00, %entry ]
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%x = fadd float %p1, %mul2
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%y = fadd float %p2, %mul
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%z = fadd float %x, %y
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ret float %z
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}
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; Check that we hoist load and scalar expressions in dominator.
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; CHECK-LABEL: @domHoisting
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; CHECK: load
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; CHECK: load
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; CHECK: fsub
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; CHECK: fmul
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; CHECK: load
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; CHECK: fsub
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; CHECK: fmul
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; CHECK-NOT: load
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; CHECK-NOT: fmul
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; CHECK-NOT: fsub
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define float @domHoisting(float %d, float* %min, float* %max, float* %a) {
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entry:
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%div = fdiv float 1.000000e+00, %d
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%0 = load float, float* %min, align 4
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%1 = load float, float* %a, align 4
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%sub = fsub float %0, %1
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%mul = fmul float %sub, %div
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%2 = load float, float* %max, align 4
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%sub1 = fsub float %2, %1
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%mul2 = fmul float %sub1, %div
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%cmp = fcmp oge float %div, 0.000000e+00
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br i1 %cmp, label %if.then, label %if.else
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if.then:
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%3 = load float, float* %max, align 4
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%4 = load float, float* %a, align 4
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%sub3 = fsub float %3, %4
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%mul4 = fmul float %sub3, %div
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%5 = load float, float* %min, align 4
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%sub5 = fsub float %5, %4
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%mul6 = fmul float %sub5, %div
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br label %if.end
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if.else:
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%6 = load float, float* %max, align 4
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%7 = load float, float* %a, align 4
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%sub9 = fsub float %6, %7
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%mul10 = fmul float %sub9, %div
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%8 = load float, float* %min, align 4
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%sub12 = fsub float %8, %7
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%mul13 = fmul float %sub12, %div
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br label %if.end
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if.end:
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%p1 = phi float [ %mul4, %if.then ], [ %mul10, %if.else ]
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%p2 = phi float [ %mul6, %if.then ], [ %mul13, %if.else ]
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%x = fadd float %p1, %mul2
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%y = fadd float %p2, %mul
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%z = fadd float %x, %y
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ret float %z
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}
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