derek.holloway
7502bf64a4
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74 lines
2.6 KiB
LLVM
74 lines
2.6 KiB
LLVM
; RUN: opt < %s -mtriple=aarch64-linux-gnu -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -S >%t
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; RUN: FileCheck %s < %t
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; ModuleID = 't.cc'
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; Function Attrs: nounwind
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define double @_Z3fooRdS_S_S_(ptr dereferenceable(8) %x, ptr dereferenceable(8) %y, ptr dereferenceable(8) %a) #0 {
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entry:
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%0 = load double, ptr %y, align 8
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%cmp = fcmp oeq double %0, 0.000000e+00
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%1 = load double, ptr %x, align 8
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br i1 %cmp, label %if.then, label %if.else
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; fadd (const, (fmul x, y))
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if.then: ; preds = %entry
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; CHECK-LABEL: if.then:
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; CHECK: %3 = fmul fast double %1, %2
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; CHECK-NEXT: %mul = fadd fast double 1.000000e+00, %3
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%2 = load double, ptr %a, align 8
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%3 = fmul fast double %1, %2
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%mul = fadd fast double 1.000000e+00, %3
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store double %mul, ptr %y, align 8
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br label %if.end
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; fsub ((fmul x, y), z)
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if.else: ; preds = %entry
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; CHECK-LABEL: if.else:
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; CHECK: %mul1 = fmul fast double %1, %2
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; CHECK-NEXT: %sub1 = fsub fast double %mul1, %0
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%4 = load double, ptr %a, align 8
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%mul1 = fmul fast double %1, %4
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%sub1 = fsub fast double %mul1, %0
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%gep1 = getelementptr double, ptr %y, i32 1
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store double %sub1, ptr %gep1, align 8
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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%5 = load double, ptr %y, align 8
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%cmp2 = fcmp oeq double %5, 2.000000e+00
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%6 = load double, ptr %x, align 8
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br i1 %cmp2, label %if.then2, label %if.else2
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; fsub (x, (fmul y, z))
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if.then2: ; preds = %entry
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; CHECK-LABEL: if.then2:
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; CHECK: %7 = fmul fast double %5, 3.000000e+00
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; CHECK-NEXT: %mul2 = fsub fast double %6, %7
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%7 = load double, ptr %a, align 8
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%8 = fmul fast double %6, 3.0000000e+00
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%mul2 = fsub fast double %7, %8
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store double %mul2, ptr %y, align 8
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br label %if.end2
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; fsub (fneg((fmul x, y)), const)
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if.else2: ; preds = %entry
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; CHECK-LABEL: if.else2:
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; CHECK: %mul3 = fmul fast double %5, 3.000000e+00
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; CHECK-NEXT: %neg = fsub fast double 0.000000e+00, %mul3
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; CHECK-NEXT: %sub2 = fsub fast double %neg, 3.000000e+00
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%mul3 = fmul fast double %6, 3.0000000e+00
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%neg = fsub fast double 0.0000000e+00, %mul3
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%sub2 = fsub fast double %neg, 3.0000000e+00
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store double %sub2, ptr %y, align 8
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br label %if.end2
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if.end2: ; preds = %if.else, %if.then
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%9 = load double, ptr %x, align 8
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%10 = load double, ptr %y, align 8
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%add = fadd fast double %9, %10
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%11 = load double, ptr %a, align 8
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%add2 = fadd fast double %add, %11
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ret double %add2
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}
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