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llvm-mirror/test/CodeGen/X86/pr32610.ll
Stanislav Mekhanoshin 87c67e3e9a DAG combiner: fold (select, C, X, undef) -> X
Differential Revision: https://reviews.llvm.org/D54646

llvm-svn: 347110
2018-11-16 23:13:38 +00:00

41 lines
1.8 KiB
LLVM

; RUN: llc -o - %s | FileCheck %s
; CHECK-LABEL: @pr32610
; CHECK: movl L_b$non_lazy_ptr, [[BASEREG:%[a-z]+]]
; CHECK: cmpl ([[BASEREG]]), {{%[a-z]+}}
; CHECK: cmpl ([[BASEREG]]), {{%[a-z]+}}
target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128"
target triple = "i386-apple-macosx10.13.0"
@c = external local_unnamed_addr global i32, align 4
@b = external local_unnamed_addr global [1 x i32], align 4
@d = external local_unnamed_addr global i32, align 4
; Function Attrs: norecurse nounwind optsize ssp
define void @pr32610() local_unnamed_addr #0 {
entry:
%0 = load i32, i32* getelementptr ([1 x i32], [1 x i32]* @b, i32 0, i32 undef), align 4, !tbaa !1
%cmp = icmp eq i32 undef, %0
%conv = zext i1 %cmp to i32
%tobool1.i = icmp ne i32 undef, 0
%or.cond.i = and i1 %cmp, %tobool1.i
%cond.i = select i1 %or.cond.i, i32 %conv, i32 1
store i32 %cond.i, i32* @c, align 4, !tbaa !1
%1 = load i32, i32* getelementptr inbounds ([1 x i32], [1 x i32]* @b, i32 0, i32 0), align 4
%tobool = icmp ne i32 %1, 0
%2 = select i1 %tobool, i32 %1, i32 2
store i32 %2, i32* @d, align 4, !tbaa !1
ret void
}
attributes #0 = { norecurse nounwind optsize ssp "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.ident = !{!0}
!0 = !{!"clang version 5.0.0 (trunk 301507) (llvm/trunk 301505)"}
!1 = !{!2, !2, i64 0}
!2 = !{!"int", !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C/C++ TBAA"}