optional-flags.ll
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -reassociate < %s | FileCheck %s
; rdar://8944681
; Reassociate should clear optional flags like nsw when reassociating.
define i64 @test0(i64 %a, i64 %b, i64 %c) {
;
; CHECK-LABEL: @test0(
; CHECK-NEXT: [[Y:%.*]] = add i64 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT: [[Z:%.*]] = add i64 [[Y]], [[C:%.*]]
; CHECK-NEXT: ret i64 [[Z]]
;
%y = add nsw i64 %c, %b
%z = add i64 %y, %a
ret i64 %z
}
define i64 @test1(i64 %a, i64 %b, i64 %c) {
;
; CHECK-LABEL: @test1(
; CHECK-NEXT: [[Y:%.*]] = add i64 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT: [[Z:%.*]] = add i64 [[Y]], [[C:%.*]]
; CHECK-NEXT: ret i64 [[Z]]
;
%y = add i64 %c, %b
%z = add nsw i64 %y, %a
ret i64 %z
}
; PR9215
define i32 @test2(i32 %x, i32 %y) {
;
; CHECK-LABEL: @test2(
; CHECK-NEXT: [[S:%.*]] = add nsw i32 [[Y:%.*]], [[X:%.*]]
; CHECK-NEXT: ret i32 [[S]]
;
%s = add nsw i32 %x, %y
ret i32 %s
}