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author | Reid Kleckner <reid@kleckner.net> | 2014-02-26 19:57:30 +0000 |
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committer | Reid Kleckner <reid@kleckner.net> | 2014-02-26 19:57:30 +0000 |
commit | 726bae9a6616a8395a79f4346c17aaab6886eb1a (patch) | |
tree | d1c90e4bbdebd7606cb8253caf713d5bd51e71b8 /test/Transforms/GlobalOpt/fastcc.ll | |
parent | 0a91f4830848ca16bf4b0569e45e23d7e8043368 (diff) | |
download | llvm-726bae9a6616a8395a79f4346c17aaab6886eb1a.tar.gz llvm-726bae9a6616a8395a79f4346c17aaab6886eb1a.tar.bz2 llvm-726bae9a6616a8395a79f4346c17aaab6886eb1a.tar.xz |
GlobalOpt: Apply fastcc to internal x86_thiscallcc functions
We should apply fastcc whenever profitable. We can expand this list,
but there are lots of conventions with performance implications that we
don't want to change.
Differential Revision: http://llvm-reviews.chandlerc.com/D2705
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202293 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/GlobalOpt/fastcc.ll')
-rw-r--r-- | test/Transforms/GlobalOpt/fastcc.ll | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/test/Transforms/GlobalOpt/fastcc.ll b/test/Transforms/GlobalOpt/fastcc.ll new file mode 100644 index 0000000000..76122b203d --- /dev/null +++ b/test/Transforms/GlobalOpt/fastcc.ll @@ -0,0 +1,46 @@ +; RUN: opt < %s -globalopt -S | FileCheck %s + +define internal i32 @f(i32* %m) { +; CHECK-LABEL: define internal fastcc i32 @f + %v = load i32* %m + ret i32 %v +} + +define internal x86_thiscallcc i32 @g(i32* %m) { +; CHECK-LABEL: define internal fastcc i32 @g + %v = load i32* %m + ret i32 %v +} + +; Leave this one alone, because the user went out of their way to request this +; convention. +define internal coldcc i32 @h(i32* %m) { +; CHECK-LABEL: define internal coldcc i32 @h + %v = load i32* %m + ret i32 %v +} + +define internal i32 @j(i32* %m) { +; CHECK-LABEL: define internal i32 @j + %v = load i32* %m + ret i32 %v +} + +define void @call_things() { + %m = alloca i32 + call i32 @f(i32* %m) + call x86_thiscallcc i32 @g(i32* %m) + call coldcc i32 @h(i32* %m) + call i32 @j(i32* %m) + ret void +} + +@llvm.used = appending global [1 x i8*] [ + i8* bitcast (i32(i32*)* @j to i8*) +], section "llvm.metadata" + +; CHECK-LABEL: define void @call_things() +; CHECK: call fastcc i32 @f +; CHECK: call fastcc i32 @g +; CHECK: call coldcc i32 @h +; CHECK: call i32 @j |