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[LowerTypeTests] Mark .cfi.jumptable nounwind.

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It doesn't unwind, and the wrong marking leads to the creation of an
.eh_frame section when it isn't necessary.

Differential Revision: https://reviews.llvm.org/D46082

llvm-svn: 331008
This commit is contained in:
Eli Friedman 2018-04-27 00:32:24 +00:00
parent 588f10bea1
commit 4c90a2d974
3 changed files with 9 additions and 6 deletions
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2
lib/Transforms/IPO/LowerTypeTests.cpp
View File

@ -1290,6 +1290,8 @@ void LowerTypeTestsModule::createJumpTable(
// by Clang for -march=armv7.
F->addFnAttr("target-cpu", "cortex-a8");
}
// Make sure we don't emit .eh_frame for this function.
F->addFnAttr(Attribute::NoUnwind);
BasicBlock *BB = BasicBlock::Create(M.getContext(), "entry", F);
IRBuilder<> IRB(BB);

4
test/Transforms/LowerTypeTests/function-arm-thumb.ll
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@ -37,5 +37,5 @@ define void @h2() "target-features"="-thumb-mode" !type !1 {
; CHECK-NEXT: unreachable
; CHECK-NEXT: }
; CHECK-DAG: attributes #[[AA]] = { naked "target-features"="-thumb-mode" }
; CHECK-DAG: attributes #[[AT]] = { naked "target-cpu"="cortex-a8" "target-features"="+thumb-mode" }
; CHECK-DAG: attributes #[[AA]] = { naked nounwind "target-features"="-thumb-mode" }
; CHECK-DAG: attributes #[[AT]] = { naked nounwind "target-cpu"="cortex-a8" "target-features"="+thumb-mode" }

9
test/Transforms/LowerTypeTests/function.ll
View File

@ -49,7 +49,7 @@ define i1 @foo(i8* %p) {
}
; X86-LINUX: define private void @[[JT]]() #[[ATTR:.*]] section ".text.cfi" align 8 {
; X86-WIN32: define private void @[[JT]]() section ".text.cfi" align 8 {
; X86-WIN32: define private void @[[JT]]() #[[ATTR:.*]] section ".text.cfi" align 8 {
; ARM: define private void @[[JT]]() #[[ATTR:.*]] section ".text.cfi" align 4 {
; THUMB: define private void @[[JT]]() #[[ATTR:.*]] section ".text.cfi" align 4 {
@ -70,9 +70,10 @@ define i1 @foo(i8* %p) {
; NATIVE-SAME: "s,s"(void ()* @f.cfi, void ()* @g.cfi)
; X86-LINUX: attributes #[[ATTR]] = { {{.*}}naked
; ARM: attributes #[[ATTR]] = { {{.*}}naked
; THUMB: attributes #[[ATTR]] = { {{.*}}naked{{.*}}"target-cpu"="cortex-a8"
; X86-LINUX: attributes #[[ATTR]] = { naked nounwind }
; X86-WIN32: attributes #[[ATTR]] = { nounwind }
; ARM: attributes #[[ATTR]] = { naked nounwind
; THUMB: attributes #[[ATTR]] = { naked nounwind "target-cpu"="cortex-a8" "target-features"="+thumb-mode" }
; WASM32: ![[I0]] = !{i64 1}
; WASM32: ![[I1]] = !{i64 2}