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llvm/test/Transforms/Coroutines/coro-split-musttail-ppc64le.ll
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| ; Tests that some target (e.g. ppc) can support tail call under condition. | |||||
| ; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S \ | |||||
| ; RUN: -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr9 | FileCheck %s | |||||
| ; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S \ | |||||
| ; RUN: -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr10 --code-model=medium \ | |||||
| ; RUN: | FileCheck %s --check-prefix=CHECK-PCREL | |||||
| define void @f() #0 { | |||||
| entry: | |||||
| %id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null) | |||||
| %alloc = call i8* @malloc(i64 16) #3 | |||||
| %vFrame = call noalias nonnull i8* @llvm.coro.begin(token %id, i8* %alloc) | |||||
| %save = call token @llvm.coro.save(i8* null) | |||||
| %addr1 = call i8* @llvm.coro.subfn.addr(i8* null, i8 0) | |||||
| %pv1 = bitcast i8* %addr1 to void (i8*)* | |||||
| call fastcc void %pv1(i8* null) | |||||
| %suspend = call i8 @llvm.coro.suspend(token %save, i1 false) | |||||
| switch i8 %suspend, label %exit [ | |||||
| i8 0, label %await.ready | |||||
| i8 1, label %exit | |||||
| ] | |||||
| await.ready: | |||||
| %save2 = call token @llvm.coro.save(i8* null) | |||||
| %addr2 = call i8* @llvm.coro.subfn.addr(i8* null, i8 0) | |||||
| %pv2 = bitcast i8* %addr2 to void (i8*)* | |||||
| call fastcc void %pv2(i8* null) | |||||
| %suspend2 = call i8 @llvm.coro.suspend(token %save2, i1 false) | |||||
| switch i8 %suspend2, label %exit [ | |||||
| i8 0, label %exit | |||||
| i8 1, label %exit | |||||
| ] | |||||
| exit: | |||||
| call i1 @llvm.coro.end(i8* null, i1 false) | |||||
| ret void | |||||
| } | |||||
| ; Verify that in the initial function resume is not marked with musttail. | |||||
| ; CHECK-LABEL: @f( | |||||
| ; CHECK: %[[addr1:.+]] = call i8* @llvm.coro.subfn.addr(i8* null, i8 0) | |||||
| ; CHECK-NEXT: %[[pv1:.+]] = bitcast i8* %[[addr1]] to void (i8*)* | |||||
| ; CHECK-NOT: musttail call fastcc void %[[pv1]](i8* null) | |||||
| ; Verify that ppc target not using PC-Relative addressing in the resume part resume call is not marked with musttail. | |||||
| ; CHECK-LABEL: @f.resume( | |||||
| ; CHECK: %[[addr2:.+]] = call i8* @llvm.coro.subfn.addr(i8* null, i8 0) | |||||
| ; CHECK-NEXT: %[[pv2:.+]] = bitcast i8* %[[addr2]] to void (i8*)* | |||||
| ; CHECK-NEXT: call fastcc void %[[pv2]](i8* null) | |||||
| ; Verify that ppc target using PC-Relative addressing in the resume part resume call is marked with musttail. | |||||
| ; CHECK-PCREL-LABEL: @f.resume( | |||||
| ; CHECK-PCREL: %[[addr2:.+]] = call i8* @llvm.coro.subfn.addr(i8* null, i8 0) | |||||
| ; CHECK-PCREL-NEXT: %[[pv2:.+]] = bitcast i8* %[[addr2]] to void (i8*)* | |||||
| ; CHECK-PCREL-NEXT: musttail call fastcc void %[[pv2]](i8* null) | |||||
| ; CHECK-PCREL-NEXT: ret void | |||||
| declare token @llvm.coro.id(i32, i8* readnone, i8* nocapture readonly, i8*) #1 | |||||
| declare i1 @llvm.coro.alloc(token) #2 | |||||
| declare i64 @llvm.coro.size.i64() #3 | |||||
| declare i8* @llvm.coro.begin(token, i8* writeonly) #2 | |||||
| declare token @llvm.coro.save(i8*) #2 | |||||
| declare i8* @llvm.coro.frame() #3 | |||||
| declare i8 @llvm.coro.suspend(token, i1) #2 | |||||
| declare i8* @llvm.coro.free(token, i8* nocapture readonly) #1 | |||||
| declare i1 @llvm.coro.end(i8*, i1) #2 | |||||
| declare i8* @llvm.coro.subfn.addr(i8* nocapture readonly, i8) #1 | |||||
| declare i8* @malloc(i64) | |||||
| attributes #0 = { presplitcoroutine } | |||||
| attributes #1 = { argmemonly nounwind readonly } | |||||
| attributes #2 = { nounwind } | |||||
| attributes #3 = { nounwind readnone } | |||||