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Fix a compiler crash where a Glue value had multiple uses. Radar 9049552.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127198 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson
2011-03-08 01:17:20 +00:00
parent 1b772f9962
commit 79f56c9618
3 changed files with 46 additions and 1 deletions
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23
test/CodeGen/ARM/select.ll
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@@ -90,3 +90,26 @@ define arm_apcscc float @f8(i32 %a) nounwind {
%tmp1 = select i1 %tmp, float 0x3FF3BE76C0000000, float 0x40030E9A20000000
ret float %tmp1
}
; <rdar://problem/9049552>
; Glue values can only have a single use, but the following test exposed a
; case where a SELECT was lowered with 2 uses of a comparison, causing the
; scheduler to assert.
; CHECK-VFP: f9:
declare i8* @objc_msgSend(i8*, i8*, ...)
define void @f9() optsize {
entry:
%cmp = icmp eq i8* undef, inttoptr (i32 4 to i8*)
%conv191 = select i1 %cmp, float -3.000000e+00, float 0.000000e+00
%conv195 = select i1 %cmp, double -1.000000e+00, double 0.000000e+00
%add = fadd double %conv195, 1.100000e+01
%conv196 = fptrunc double %add to float
%add201 = fadd float undef, %conv191
%tmp484 = bitcast float %conv196 to i32
%tmp478 = bitcast float %add201 to i32
%tmp490 = insertvalue [2 x i32] undef, i32 %tmp484, 0
%tmp493 = insertvalue [2 x i32] %tmp490, i32 %tmp478, 1
call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, [2 x i32], i32, float)*)(i8* undef, i8* undef, [2 x i32] %tmp493, i32 0, float 1.000000e+00) optsize
ret void
}