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| author | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-04-06 13:22:01 +0000 |
|---|---|---|
| committer | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-04-06 13:22:01 +0000 |
| commit | aed5ccdeed778342b9ff0a5e7d089067e4ffdef0 (patch) | |
| tree | d7fdc2945b0579a6fb18d4d01dbcfdc5e407a002 /clang/test/CodeGen/builtin-assume.c | |
| parent | 1931b6263215f84f1096eb338ad56e564b21cb37 (diff) | |
| download | bcm5719-llvm-aed5ccdeed778342b9ff0a5e7d089067e4ffdef0.tar.gz bcm5719-llvm-aed5ccdeed778342b9ff0a5e7d089067e4ffdef0.zip | |
HasSideEffects() should return false for calls to pure and const functions.
Differential Revision: http://reviews.llvm.org/D8548
llvm-svn: 234152
Diffstat (limited to 'clang/test/CodeGen/builtin-assume.c')
| -rw-r--r-- | clang/test/CodeGen/builtin-assume.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/clang/test/CodeGen/builtin-assume.c b/clang/test/CodeGen/builtin-assume.c index 8f83f17377a..19afec69e78 100644 --- a/clang/test/CodeGen/builtin-assume.c +++ b/clang/test/CodeGen/builtin-assume.c @@ -1,25 +1,44 @@ // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s // RUN: %clang_cc1 -triple i386-mingw32 -fms-extensions -emit-llvm -o - %s | FileCheck %s +int nonconst(void); +int isconst(void) __attribute__((const)); +int ispure(void) __attribute__((pure)); + // CHECK-LABEL: @test1 int test1(int *a, int i) { // CHECK: store i32* %a, i32** [[A_ADDR:%.+]], align // CHECK: [[A:%.+]] = load i32*, i32** [[A_ADDR]] // CHECK: [[CMP:%.+]] = icmp ne i32* [[A]], null // CHECK: call void @llvm.assume(i1 [[CMP]]) + +// CHECK: [[CALL:%.+]] = call i32 @isconst() +// CHECK: [[BOOL:%.+]] = icmp ne i32 [[CALL]], 0 +// CHECK: call void @llvm.assume(i1 [[BOOL]]) + +// CHECK: [[CALLPURE:%.+]] = call i32 @ispure() +// CHECK: [[BOOLPURE:%.+]] = icmp ne i32 [[CALLPURE]], 0 +// CHECK: call void @llvm.assume(i1 [[BOOLPURE]]) #ifdef _MSC_VER __assume(a != 0) + __assume(isconst()); + __assume(ispure()); #else __builtin_assume(a != 0); + __builtin_assume(isconst()); + __builtin_assume(ispure()); #endif // Nothing is generated for an assume with side effects... // CHECK-NOT: load i32*, i32** %i.addr // CHECK-NOT: call void @llvm.assume +// CHECK-NOT: call i32 @nonconst() #ifdef _MSC_VER __assume(++i != 0) + __assume(nonconst()); #else __builtin_assume(++i != 0); + __builtin_assume(nonconst()); #endif return a[0]; |
