hoist-unsafe-pr31729.ll
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; RUN: opt -gvn-hoist -S < %s | FileCheck %s
; Check that urem is not hoisted.
; CHECK-LABEL: @main
; CHECK: urem
; CHECK: urem
; CHECK: urem
@g_x_s = global i32 -470211272, align 4
@g_z_s = global i32 2007237709, align 4
@g_x_u = global i32 282475249, align 4
@g_z_u = global i32 984943658, align 4
@g_m = global i32 16807, align 4
@res = common global i32 0, align 4
; Function Attrs:
define i64 @func() #0 {
entry:
ret i64 1
}
; Function Attrs:
define i32 @main() {
entry:
%0 = load volatile i32, i32* @g_x_s, align 4
%1 = load volatile i32, i32* @g_z_s, align 4
%2 = load volatile i32, i32* @g_x_u, align 4
%3 = load volatile i32, i32* @g_z_u, align 4
%4 = load volatile i32, i32* @g_m, align 4
%call = call i64 @func() #4
%conv = sext i32 %1 to i64
%cmp = icmp ne i64 %call, %conv
br i1 %cmp, label %if.end, label %lor.lhs.false
lor.lhs.false:
%div = udiv i32 %4, %1
%rem = urem i32 %0, %div
%cmp2 = icmp eq i32 %rem, 0
br i1 %cmp2, label %if.end, label %if.then
if.then:
br label %cleanup
if.end:
%call4 = call i64 @func() #4
%conv5 = zext i32 %3 to i64
%cmp6 = icmp ne i64 %call4, %conv5
br i1 %cmp6, label %if.end14, label %lor.lhs.false8
lor.lhs.false8:
%div9 = udiv i32 %4, %3
%rem10 = urem i32 %0, %div9
%cmp11 = icmp eq i32 %rem10, 0
br i1 %cmp11, label %if.end14, label %if.then13
if.then13:
br label %cleanup
if.end14:
%call15 = call i64 @func() #4
%cmp17 = icmp ne i64 %call15, %conv
br i1 %cmp17, label %if.end25, label %lor.lhs.false19
lor.lhs.false19:
%div20 = udiv i32 %4, %1
%rem21 = urem i32 %0, %div20
%cmp22 = icmp eq i32 %rem21, 0
br i1 %cmp22, label %if.end25, label %if.then24
if.then24:
br label %cleanup
if.end25:
br label %cleanup
cleanup:
%retval.0 = phi i32 [ 0, %if.end25 ], [ 1, %if.then24 ], [ 1, %if.then13 ], [ 1, %if.then ]
ret i32 %retval.0
}
attributes #0 = { minsize noinline nounwind optsize uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }