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PR7853: fix a silly mistake introduced in r101899, and add a test to make sure

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it doesn't regress again.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110597 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman 2010-08-09 20:49:43 +00:00
parent ca3469e59e
commit 4fffb345ed
2 changed files with 23 additions and 13 deletions
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2
lib/Transforms/InstCombine/InstCombineCalls.cpp
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@ -538,7 +538,7 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
// X + 0 -> {X, false}
if (RHS->isZero()) {
Constant *V[] = {
UndefValue::get(II->getCalledValue()->getType()),
UndefValue::get(II->getArgOperand(0)->getType()),
ConstantInt::getFalse(II->getContext())
};
Constant *Struct = ConstantStruct::get(II->getContext(), V, 2, false);

34
test/Transforms/InstCombine/intrinsics.ll
View File

@ -10,16 +10,16 @@ declare i32 @llvm.ctlz.i32(i32) nounwind readnone
declare i32 @llvm.ctpop.i32(i32) nounwind readnone
declare i8 @llvm.ctlz.i8(i8) nounwind readnone
define i8 @test1(i8 %A, i8 %B) {
define i8 @uaddtest1(i8 %A, i8 %B) {
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 %A, i8 %B)
%y = extractvalue %overflow.result %x, 0
ret i8 %y
; CHECK: @test1
; CHECK: @uaddtest1
; CHECK-NEXT: %y = add i8 %A, %B
; CHECK-NEXT: ret i8 %y
}
define i8 @test2(i8 %A, i8 %B, i1* %overflowPtr) {
define i8 @uaddtest2(i8 %A, i8 %B, i1* %overflowPtr) {
%and.A = and i8 %A, 127
%and.B = and i8 %B, 127
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 %and.A, i8 %and.B)
@ -27,7 +27,7 @@ define i8 @test2(i8 %A, i8 %B, i1* %overflowPtr) {
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK: @test2
; CHECK: @uaddtest2
; CHECK-NEXT: %and.A = and i8 %A, 127
; CHECK-NEXT: %and.B = and i8 %B, 127
; CHECK-NEXT: %1 = add nuw i8 %and.A, %and.B
@ -35,7 +35,7 @@ define i8 @test2(i8 %A, i8 %B, i1* %overflowPtr) {
; CHECK-NEXT: ret i8 %1
}
define i8 @test3(i8 %A, i8 %B, i1* %overflowPtr) {
define i8 @uaddtest3(i8 %A, i8 %B, i1* %overflowPtr) {
%or.A = or i8 %A, -128
%or.B = or i8 %B, -128
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 %or.A, i8 %or.B)
@ -43,7 +43,7 @@ define i8 @test3(i8 %A, i8 %B, i1* %overflowPtr) {
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK: @test3
; CHECK: @uaddtest3
; CHECK-NEXT: %or.A = or i8 %A, -128
; CHECK-NEXT: %or.B = or i8 %B, -128
; CHECK-NEXT: %1 = add i8 %or.A, %or.B
@ -51,34 +51,44 @@ define i8 @test3(i8 %A, i8 %B, i1* %overflowPtr) {
; CHECK-NEXT: ret i8 %1
}
define i8 @test4(i8 %A, i1* %overflowPtr) {
define i8 @uaddtest4(i8 %A, i1* %overflowPtr) {
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 undef, i8 %A)
%y = extractvalue %overflow.result %x, 0
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK: @test4
; CHECK: @uaddtest4
; CHECK-NEXT: ret i8 undef
}
define i8 @test5(i8 %A, i1* %overflowPtr) {
define i8 @uaddtest5(i8 %A, i1* %overflowPtr) {
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 0, i8 %A)
%y = extractvalue %overflow.result %x, 0
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK: @uaddtest5
; CHECK: ret i8 %A
}
define i8 @umultest1(i8 %A, i1* %overflowPtr) {
%x = call %overflow.result @llvm.umul.with.overflow.i8(i8 0, i8 %A)
%y = extractvalue %overflow.result %x, 0
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK: @test5
; CHECK: @umultest1
; CHECK-NEXT: store i1 false, i1* %overflowPtr
; CHECK-NEXT: ret i8 0
}
define i8 @test6(i8 %A, i1* %overflowPtr) {
define i8 @umultest2(i8 %A, i1* %overflowPtr) {
%x = call %overflow.result @llvm.umul.with.overflow.i8(i8 1, i8 %A)
%y = extractvalue %overflow.result %x, 0
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK: @test6
; CHECK: @umultest2
; CHECK-NEXT: store i1 false, i1* %overflowPtr
; CHECK-NEXT: ret i8 %A
}