42 lines
950 B
LLVM
42 lines
950 B
LLVM
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; RUN: opt < %s -instcombine -S | FileCheck %s
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@i = constant i32 1, align 4
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@f = constant float 0x3FF19999A0000000, align 4
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@cmp = common global i32 0, align 4
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@resf = common global float* null, align 8
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@resi = common global i32* null, align 8
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define i32 @foo() {
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entry:
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br label %while.cond
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while.cond:
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%res.0 = phi i32* [ null, %entry ], [ @i, %if.then ], [ bitcast (float* @f to i32*), %if.else ]
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%0 = load i32, i32* @cmp, align 4
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%shr = ashr i32 %0, 1
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store i32 %shr, i32* @cmp, align 4
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%tobool = icmp ne i32 %shr, 0
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br i1 %tobool, label %while.body, label %while.end
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while.body:
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%and = and i32 %shr, 1
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%tobool1 = icmp ne i32 %and, 0
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br i1 %tobool1, label %if.then, label %if.else
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if.then:
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br label %while.cond
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if.else:
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br label %while.cond
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while.end:
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%1 = bitcast i32* %res.0 to float*
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store float* %1, float** @resf, align 8
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store i32* %res.0, i32** @resi, align 8
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ret i32 0
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; CHECK-NOT: bitcast i32
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}
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