pr27996.ll
950 Bytes
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; RUN: opt < %s -instcombine -S | FileCheck %s
@i = constant i32 1, align 4
@f = constant float 0x3FF19999A0000000, align 4
@cmp = common global i32 0, align 4
@resf = common global float* null, align 8
@resi = common global i32* null, align 8
define i32 @foo() {
entry:
br label %while.cond
while.cond:
%res.0 = phi i32* [ null, %entry ], [ @i, %if.then ], [ bitcast (float* @f to i32*), %if.else ]
%0 = load i32, i32* @cmp, align 4
%shr = ashr i32 %0, 1
store i32 %shr, i32* @cmp, align 4
%tobool = icmp ne i32 %shr, 0
br i1 %tobool, label %while.body, label %while.end
while.body:
%and = and i32 %shr, 1
%tobool1 = icmp ne i32 %and, 0
br i1 %tobool1, label %if.then, label %if.else
if.then:
br label %while.cond
if.else:
br label %while.cond
while.end:
%1 = bitcast i32* %res.0 to float*
store float* %1, float** @resf, align 8
store i32* %res.0, i32** @resi, align 8
ret i32 0
; CHECK-NOT: bitcast i32
}