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llvm-project/llvm/test/Other/opt-override-mcpu-mattr.ll

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Let llc and opt override "-target-cpu" and "-target-features" via command line options. This commit fixes a bug in llc and opt where "-mcpu" and "-mattr" wouldn't override function attributes "-target-cpu" and "-target-features" in the IR. Differential Revision: http://reviews.llvm.org/D9537 llvm-svn: 236677
2015-05-07 07:54:14 +08:00
; RUN: opt < %s -mtriple=x86_64-apple-darwin -mcpu=broadwell -mattr=+avx2 -S | FileCheck %s
llc: Change behavior of -mcpu with existing attribute Don't overwrite existing target-cpu attributes. I've often found the replacement behavior annoying, and this is inconsistent with how the fast math command line flags interact with the function attributes. Does not yet change target-features, since I think that should behave as a concatenation.
2019-12-09 19:37:14 +08:00
; Check that opt can add but not rewrite function attributes
; target-cpu and target-features using command line options -mcpu and
; -mattr.
Let llc and opt override "-target-cpu" and "-target-features" via command line options. This commit fixes a bug in llc and opt where "-mcpu" and "-mattr" wouldn't override function attributes "-target-cpu" and "-target-features" in the IR. Differential Revision: http://reviews.llvm.org/D9537 llvm-svn: 236677
2015-05-07 07:54:14 +08:00
llc: Change behavior of -mattr with existing attribute Append this to the existing target-features attribute on the function. Some flags ignore existing attributes, and some overwrite them. Move towards consistently respecting existing attributes if present. Since target features act as a state machine on their own, append to the function attribute. The backend default added feature list, function attributes, and -mattr will all be appended together, and the later features can individually toggle the earlier settings.
2019-12-09 20:33:25 +08:00
; CHECK: attributes #0 = { nounwind readnone ssp uwtable "target-cpu"="broadwell" "target-features"="+ssse3,+cx16,+sse,+sse2,+sse3,+avx2" "use-soft-float"="false" }
; CHECK: attributes #1 = { nounwind readnone ssp uwtable "target-cpu"="core2" "target-features"="+ssse3,+cx16,+sse,+sse2,+sse3,+avx2" "use-soft-float"="false" }
Let llc and opt override "-target-cpu" and "-target-features" via command line options. This commit fixes a bug in llc and opt where "-mcpu" and "-mattr" wouldn't override function attributes "-target-cpu" and "-target-features" in the IR. Differential Revision: http://reviews.llvm.org/D9537 llvm-svn: 236677
2015-05-07 07:54:14 +08:00
llc: Change behavior of -mcpu with existing attribute Don't overwrite existing target-cpu attributes. I've often found the replacement behavior annoying, and this is inconsistent with how the fast math command line flags interact with the function attributes. Does not yet change target-features, since I think that should behave as a concatenation.
2019-12-09 19:37:14 +08:00
define i32 @no_target_cpu() #0 {
Let llc and opt override "-target-cpu" and "-target-features" via command line options. This commit fixes a bug in llc and opt where "-mcpu" and "-mattr" wouldn't override function attributes "-target-cpu" and "-target-features" in the IR. Differential Revision: http://reviews.llvm.org/D9537 llvm-svn: 236677
2015-05-07 07:54:14 +08:00
entry:
ret i32 0
}
llc: Change behavior of -mcpu with existing attribute Don't overwrite existing target-cpu attributes. I've often found the replacement behavior annoying, and this is inconsistent with how the fast math command line flags interact with the function attributes. Does not yet change target-features, since I think that should behave as a concatenation.
2019-12-09 19:37:14 +08:00
define i32 @has_targe_cpu() #1 {
entry:
ret i32 0
}
attributes #0 = { nounwind readnone ssp uwtable "target-features"="+ssse3,+cx16,+sse,+sse2,+sse3" "use-soft-float"="false" }
attributes #1 = { nounwind readnone ssp uwtable "target-cpu"="core2" "target-features"="+ssse3,+cx16,+sse,+sse2,+sse3" "use-soft-float"="false" }