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e49dd688ba
candidates with coldcc attribute. This recommits r322721 reverted due to sanitizer memory leak build bot failures. Original commit message: This patch adds support for the coldcc calling convention for Power. This changes the set of non-volatile registers. It includes a pass to stress test the implementation by marking all static directly called functions with the coldcc attribute through the option -enable-coldcc-stress-test. It also includes an option, -ppc-enable-coldcc, to add the coldcc attribute to functions which are cold at all call sites based on BlockFrequencyInfo when the containing function does not call any non cold functions. Differential Revision: https://reviews.llvm.org/D38413 llvm-svn: 323778
49 lines
1.4 KiB
LLVM
49 lines
1.4 KiB
LLVM
; RUN: opt < %s -globalopt -S -enable-coldcc-stress-test -mtriple=powerpc64le-unknown-linux-gnu | FileCheck %s -check-prefix=COLDCC
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; RUN: opt < %s -globalopt -S | FileCheck %s -check-prefix=CHECK
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define internal i32 @callee_default(i32* %m) {
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; COLDCC-LABEL: define internal coldcc i32 @callee_default
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; CHECK-LABEL: define internal fastcc i32 @callee_default
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%v = load i32, i32* %m
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ret i32 %v
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}
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define internal fastcc i32 @callee_fastcc(i32* %m) {
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; COLDCC-LABEL: define internal fastcc i32 @callee_fastcc
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; CHECK-LABEL: define internal fastcc i32 @callee_fastcc
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%v = load i32, i32* %m
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ret i32 %v
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}
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define internal coldcc i32 @callee_coldcc(i32* %m) {
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; COLDCC-LABEL: define internal coldcc i32 @callee_coldcc
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; CHECK-LABEL: define internal coldcc i32 @callee_coldcc
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%v = load i32, i32* %m
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ret i32 %v
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}
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define i32 @callee(i32* %m) {
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%v = load i32, i32* %m
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ret i32 %v
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}
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define void @caller() {
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%m = alloca i32
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call i32 @callee_default(i32* %m)
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call fastcc i32 @callee_fastcc(i32* %m)
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call coldcc i32 @callee_coldcc(i32* %m)
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call i32 @callee(i32* %m)
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ret void
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}
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; COLDCC-LABEL: define void @caller()
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; COLDCC: call coldcc i32 @callee_default
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; COLDCC: call fastcc i32 @callee_fastcc
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; COLDCC: call coldcc i32 @callee_coldcc
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; COLDCC: call i32 @callee
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; CHECK-LABEL: define void @caller()
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; CHECK: call fastcc i32 @callee_default
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; CHECK: call fastcc i32 @callee_fastcc
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; CHECK: call coldcc i32 @callee_coldcc
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; CHECK: call i32 @callee
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