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| author | Vitaly Buka <vitalybuka@google.com> | 2019-07-12 01:42:03 +0000 |
|---|---|---|
| committer | Vitaly Buka <vitalybuka@google.com> | 2019-07-12 01:42:03 +0000 |
| commit | c559e63798e69be1d7c66847b662b53ba88f0f9c (patch) | |
| tree | 3106fe7e5e1551c8f253b0f84f26a2dd56a8285e /clang/test/CodeGenCXX/auto-var-init.cpp | |
| parent | 669ad5ff1502fa81fd76d6e745781df60f713756 (diff) | |
| download | bcm5719-llvm-c559e63798e69be1d7c66847b662b53ba88f0f9c.tar.gz bcm5719-llvm-c559e63798e69be1d7c66847b662b53ba88f0f9c.zip | |
Handle IntToPtr in isBytewiseValue
Summary:
This helps with more efficient use of memset for pattern initialization
From @pcc prototype for -ftrivial-auto-var-init=pattern optimizations
Binary size change on CTMark, (with -fuse-ld=lld -Wl,--icf=all, similar results with default linker options)
```
master patch diff
Os 8.238864e+05 8.238864e+05 0.0
O3 1.054797e+06 1.054797e+06 0.0
Os zero 8.292384e+05 8.292384e+05 0.0
O3 zero 1.062626e+06 1.062626e+06 0.0
Os pattern 8.579712e+05 8.338048e+05 -0.030299
O3 pattern 1.090502e+06 1.067574e+06 -0.020481
```
Zero vs Pattern on master
```
zero pattern diff
Os 8.292384e+05 8.579712e+05 0.036578
O3 1.062626e+06 1.090502e+06 0.025124
```
Zero vs Pattern with the patch
```
zero pattern diff
Os 8.292384e+05 8.338048e+05 0.003333
O3 1.062626e+06 1.067574e+06 0.003193
```
Reviewers: pcc, eugenis
Subscribers: hiraditya, cfe-commits, llvm-commits
Tags: #clang, #llvm
Differential Revision: https://reviews.llvm.org/D63967
llvm-svn: 365858
Diffstat (limited to 'clang/test/CodeGenCXX/auto-var-init.cpp')
| -rw-r--r-- | clang/test/CodeGenCXX/auto-var-init.cpp | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/clang/test/CodeGenCXX/auto-var-init.cpp b/clang/test/CodeGenCXX/auto-var-init.cpp index 1d6bfffe73d..0bfe6c34a95 100644 --- a/clang/test/CodeGenCXX/auto-var-init.cpp +++ b/clang/test/CodeGenCXX/auto-var-init.cpp @@ -1042,14 +1042,8 @@ TEST_UNINIT(intptr4, int*[4]); // CHECK: %uninit = alloca [4 x i32*], align // CHECK-NEXT: call void @{{.*}}used{{.*}}%uninit) // PATTERN-O1-LABEL: @test_intptr4_uninit() -// PATTERN-O1: %1 = getelementptr inbounds [4 x i32*], [4 x i32*]* %uninit, i64 0, i64 0 -// PATTERN-O1-NEXT: store i32* inttoptr (i64 -6148914691236517206 to i32*), i32** %1, align 16 -// PATTERN-O1-NEXT: %2 = getelementptr inbounds [4 x i32*], [4 x i32*]* %uninit, i64 0, i64 1 -// PATTERN-O1-NEXT: store i32* inttoptr (i64 -6148914691236517206 to i32*), i32** %2, align 8 -// PATTERN-O1-NEXT: %3 = getelementptr inbounds [4 x i32*], [4 x i32*]* %uninit, i64 0, i64 2 -// PATTERN-O1-NEXT: store i32* inttoptr (i64 -6148914691236517206 to i32*), i32** %3, align 16 -// PATTERN-O1-NEXT: %4 = getelementptr inbounds [4 x i32*], [4 x i32*]* %uninit, i64 0, i64 3 -// PATTERN-O1-NEXT: store i32* inttoptr (i64 -6148914691236517206 to i32*), i32** %4, align 8 +// PATTERN-O1: %1 = bitcast [4 x i32*]* %uninit to i8* +// PATTERN-O1-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 16 %1, i8 -86, i64 32, i1 false) // ZERO-LABEL: @test_intptr4_uninit() // ZERO: call void @llvm.memset{{.*}}, i8 0, |
