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llvm-mirror/test/Transforms/InstCombine/mul-masked-bits.ll
Eric Christopher a62270de2c Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
2019-04-17 04:52:47 +00:00

20 lines
577 B
LLVM

; NOTE: Assertions have been autogenerated by update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
define i32 @foo(i32 %x, i32 %y) {
; CHECK-LABEL: @foo(
; CHECK-NEXT: [[A:%.*]] = and i32 %x, 7
; CHECK-NEXT: [[B:%.*]] = and i32 %y, 7
; CHECK-NEXT: [[C:%.*]] = mul nuw nsw i32 [[A]], [[B]]
; CHECK-NEXT: [[D:%.*]] = shl nuw i32 [[C]], 26
; CHECK-NEXT: [[E:%.*]] = ashr exact i32 [[D]], 26
; CHECK-NEXT: ret i32 [[E]]
;
%a = and i32 %x, 7
%b = and i32 %y, 7
%c = mul i32 %a, %b
%d = shl i32 %c, 26
%e = ashr i32 %d, 26
ret i32 %e
}