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| author | Tim Northover <tnorthover@apple.com> | 2017-03-09 21:12:06 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2017-03-09 21:12:06 +0000 |
| commit | 7a9ea8f628f863c2cde41e63be45a2e47fbd95ef (patch) | |
| tree | 352006c08d3894ee9c6e38b6a68d3710c6cc3831 /llvm/test | |
| parent | 7e56366204287a513420a2633daa1f92b009f4bf (diff) | |
| download | bcm5719-llvm-7a9ea8f628f863c2cde41e63be45a2e47fbd95ef.tar.gz bcm5719-llvm-7a9ea8f628f863c2cde41e63be45a2e47fbd95ef.zip | |
GlobalISel: put debug info for static allocas in the MachineFunction.
The good reason to do this is that static allocas are pretty simple to handle
(especially at -O0) and avoiding tracking DBG_VALUEs throughout the pipeline
should give some kind of performance benefit.
The bad reason is that the debug pipeline is an unholy mess of implicit
contracts, where determining whether "DBG_VALUE %reg, imm" actually implies a
load or not involves the services of at least 3 soothsayers and the sacrifice
of at least one chicken. And it still gets it wrong if the variable is at SP
directly.
llvm-svn: 297410
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/CodeGen/AArch64/GlobalISel/debug-insts.ll | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/llvm/test/CodeGen/AArch64/GlobalISel/debug-insts.ll b/llvm/test/CodeGen/AArch64/GlobalISel/debug-insts.ll index 2c3def2e4a9..5a76661180f 100644 --- a/llvm/test/CodeGen/AArch64/GlobalISel/debug-insts.ll +++ b/llvm/test/CodeGen/AArch64/GlobalISel/debug-insts.ll @@ -1,8 +1,10 @@ ; RUN: llc -global-isel -mtriple=aarch64 %s -stop-after=irtranslator -o - | FileCheck %s - +; RUN: llc -mtriple=aarch64 -global-isel --global-isel-abort=0 -o /dev/null ; CHECK-LABEL: name: debug_declare -; CHECK: DBG_VALUE %stack.0.in.addr, 0, !11, !12, debug-location !13 +; CHECK: stack: +; CHECK: - { id: {{.*}}, name: in.addr, offset: {{.*}}, size: {{.*}}, alignment: {{.*}}, di-variable: '!11', +; CHECK-NEXT: di-expression: '!12', di-location: '!13' } ; CHECK: DBG_VALUE debug-use %0(s32), debug-use _, !11, !12, debug-location !13 define void @debug_declare(i32 %in) #0 !dbg !7 { entry: @@ -13,6 +15,15 @@ entry: ret void, !dbg !14 } +; CHECK-LABEL: name: debug_declare_vla +; CHECK: DBG_VALUE debug-use %{{[0-9]+}}(p0), debug-use _, !11, !12, debug-location !13 +define void @debug_declare_vla(i32 %in) #0 !dbg !7 { +entry: + %vla.addr = alloca i32, i32 %in + call void @llvm.dbg.declare(metadata i32* %vla.addr, metadata !11, metadata !12), !dbg !13 + ret void, !dbg !14 +} + ; CHECK-LABEL: name: debug_value ; CHECK: [[IN:%[0-9]+]](s32) = COPY %w0 define void @debug_value(i32 %in) #0 !dbg !7 { |
