mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-27 15:28:53 -04:00
c85ea8e175
would trigger an extra method call). - While in the area, I also changed Clang to not emit an unnecessary load from 'x' in cases like 'y = (x = 1)'. llvm-svn: 107210
33 lines
911 B
C
33 lines
911 B
C
// RUN: %clang_cc1 -triple x86_64 -emit-llvm -o - %s | FileCheck %s
|
|
|
|
// Check that we don't generate unnecessary reloads.
|
|
//
|
|
// CHECK: define void @f0()
|
|
// CHECK: [[x_0:%.*]] = alloca i32, align 4
|
|
// CHECK-NEXT: [[y_0:%.*]] = alloca i32, align 4
|
|
// CHECK-NEXT: store i32 1, i32* [[x_0]]
|
|
// CHECK-NEXT: store i32 1, i32* [[x_0]]
|
|
// CHECK-NEXT: store i32 1, i32* [[y_0]]
|
|
// CHECK: }
|
|
void f0() {
|
|
int x, y;
|
|
x = 1;
|
|
y = (x = 1);
|
|
}
|
|
|
|
// Check that we do generate reloads for volatile access.
|
|
//
|
|
// CHECK: define void @f1()
|
|
// CHECK: [[x_1:%.*]] = alloca i32, align 4
|
|
// CHECK-NEXT: [[y_1:%.*]] = alloca i32, align 4
|
|
// CHECK-NEXT: volatile store i32 1, i32* [[x_1]]
|
|
// CHECK-NEXT: volatile store i32 1, i32* [[x_1]]
|
|
// CHECK-NEXT: [[tmp_1:%.*]] = volatile load i32* [[x_1]]
|
|
// CHECK-NEXT: volatile store i32 [[tmp_1]], i32* [[y_1]]
|
|
// CHECK: }
|
|
void f1() {
|
|
volatile int x, y;
|
|
x = 1;
|
|
y = (x = 1);
|
|
}
|