| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes |
| ; RUN: opt < %s -passes=argpromotion -S | FileCheck %s |
| ; PR2498 |
| |
| ; This test tries to convince CHECK about promoting the load from %A + 2, |
| ; because there is a load of %A in the entry block |
| define internal i32 @callee(i1 %C, i32* %A) { |
| ; CHECK-LABEL: define {{[^@]+}}@callee |
| ; CHECK-SAME: (i1 [[C:%.*]], i32* [[A:%.*]]) |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[A_0:%.*]] = load i32, i32* [[A]] |
| ; CHECK-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]] |
| ; CHECK: T: |
| ; CHECK-NEXT: ret i32 [[A_0]] |
| ; CHECK: F: |
| ; CHECK-NEXT: [[A_2:%.*]] = getelementptr i32, i32* [[A]], i32 2 |
| ; CHECK-NEXT: [[R:%.*]] = load i32, i32* [[A_2]] |
| ; CHECK-NEXT: ret i32 [[R]] |
| ; |
| entry: |
| ; Unconditonally load the element at %A |
| %A.0 = load i32, i32* %A |
| br i1 %C, label %T, label %F |
| |
| T: |
| ret i32 %A.0 |
| |
| F: |
| ; Load the element at offset two from %A. This should not be promoted! |
| %A.2 = getelementptr i32, i32* %A, i32 2 |
| %R = load i32, i32* %A.2 |
| ret i32 %R |
| } |
| |
| define i32 @foo() { |
| ; CHECK-LABEL: define {{[^@]+}}@foo() |
| ; CHECK-NEXT: [[X:%.*]] = call i32 @callee(i1 false, i32* null) |
| ; CHECK-NEXT: ret i32 [[X]] |
| ; |
| %X = call i32 @callee(i1 false, i32* null) ; <i32> [#uses=1] |
| ret i32 %X |
| } |
| |