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[CGP] Precommit tests for D74228.

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This commit is contained in:
Florian Hahn 2020-02-18 15:43:01 +01:00
parent 96e31c495a
commit 9008c8943b
2 changed files with 90 additions and 0 deletions
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45
test/Transforms/CodeGenPrepare/AArch64/overflow-intrinsics.ll
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@ -98,6 +98,51 @@ define i64 @uaddo3_math_overflow_used(i64 %a, i64 %b, i64* %res) nounwind ssp {
ret i64 %Q
}
; Instcombine folds (a + b <u a) to (a ^ -1 <u b). Make sure we match this
; pattern as well.
define i64 @uaddo6_xor(i64 %a, i64 %b) {
; CHECK-LABEL: @uaddo6_xor(
; CHECK-NEXT: [[X:%.*]] = xor i64 [[A:%.*]], -1
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[X]], [[B:%.*]]
; CHECK-NEXT: [[Q:%.*]] = select i1 [[CMP]], i64 [[B]], i64 42
; CHECK-NEXT: ret i64 [[Q]]
;
%x = xor i64 %a, -1
%cmp = icmp ult i64 %x, %b
%Q = select i1 %cmp, i64 %b, i64 42
ret i64 %Q
}
define i64 @uaddo6_xor_commuted(i64 %a, i64 %b) {
; CHECK-LABEL: @uaddo6_xor_commuted(
; CHECK-NEXT: [[X:%.*]] = xor i64 -1, [[A:%.*]]
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[X]], [[B:%.*]]
; CHECK-NEXT: [[Q:%.*]] = select i1 [[CMP]], i64 [[B]], i64 42
; CHECK-NEXT: ret i64 [[Q]]
;
%x = xor i64 -1, %a
%cmp = icmp ult i64 %x, %b
%Q = select i1 %cmp, i64 %b, i64 42
ret i64 %Q
}
declare void @use(i64)
define i64 @uaddo6_xor_multi_use(i64 %a, i64 %b) {
; CHECK-LABEL: @uaddo6_xor_multi_use(
; CHECK-NEXT: [[X:%.*]] = xor i64 -1, [[A:%.*]]
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[X]], [[B:%.*]]
; CHECK-NEXT: [[Q:%.*]] = select i1 [[CMP]], i64 [[B]], i64 42
; CHECK-NEXT: call void @use(i64 [[X]])
; CHECK-NEXT: ret i64 [[Q]]
;
%x = xor i64 -1, %a
%cmp = icmp ult i64 %x, %b
%Q = select i1 %cmp, i64 %b, i64 42
call void @use(i64 %x)
ret i64 %Q
}
define i1 @usubo_ult_i64_overflow_used(i64 %x, i64 %y, i64* %p) {
; CHECK-LABEL: @usubo_ult_i64_overflow_used(
; CHECK-NEXT: [[S:%.*]] = sub i64 [[X:%.*]], [[Y:%.*]]

45
test/Transforms/CodeGenPrepare/X86/overflow-intrinsics.ll
View File

@ -149,6 +149,51 @@ exit:
ret i64 0
}
; Instcombine folds (a + b <u a) to (a ^ -1 <u b). Make sure we match this
; pattern as well.
define i64 @uaddo6_xor(i64 %a, i64 %b) {
; CHECK-LABEL: @uaddo6_xor(
; CHECK-NEXT: [[X:%.*]] = xor i64 [[A:%.*]], -1
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[X]], [[B:%.*]]
; CHECK-NEXT: [[Q:%.*]] = select i1 [[CMP]], i64 [[B]], i64 42
; CHECK-NEXT: ret i64 [[Q]]
;
%x = xor i64 %a, -1
%cmp = icmp ult i64 %x, %b
%Q = select i1 %cmp, i64 %b, i64 42
ret i64 %Q
}
define i64 @uaddo6_xor_commuted(i64 %a, i64 %b) {
; CHECK-LABEL: @uaddo6_xor_commuted(
; CHECK-NEXT: [[X:%.*]] = xor i64 -1, [[A:%.*]]
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[X]], [[B:%.*]]
; CHECK-NEXT: [[Q:%.*]] = select i1 [[CMP]], i64 [[B]], i64 42
; CHECK-NEXT: ret i64 [[Q]]
;
%x = xor i64 -1, %a
%cmp = icmp ult i64 %x, %b
%Q = select i1 %cmp, i64 %b, i64 42
ret i64 %Q
}
declare void @use(i64)
define i64 @uaddo6_xor_multi_use(i64 %a, i64 %b) {
; CHECK-LABEL: @uaddo6_xor_multi_use(
; CHECK-NEXT: [[X:%.*]] = xor i64 -1, [[A:%.*]]
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[X]], [[B:%.*]]
; CHECK-NEXT: [[Q:%.*]] = select i1 [[CMP]], i64 [[B]], i64 42
; CHECK-NEXT: call void @use(i64 [[X]])
; CHECK-NEXT: ret i64 [[Q]]
;
%x = xor i64 -1, %a
%cmp = icmp ult i64 %x, %b
%Q = select i1 %cmp, i64 %b, i64 42
call void @use(i64 %x)
ret i64 %Q
}
; When adding 1, the general pattern for add-overflow may be different due to icmp canonicalization.
; PR31754: https://bugs.llvm.org/show_bug.cgi?id=31754