d2d9dc8eb4
Debugify is extremely useful as a testing and debugging tool, and a good number of LLVM-IR transform tests use it. We need it to support "new" non-instruction debug-info to get test coverage, but it's not important enough to completely convert right now (and it'd be a large undertaking). Thus: convert to/from dbg.value/DPValue mode on entry and exit of the pass, which gives us the functionality without any further work. The cost is compile-time, but again this is only happening during tests. Tested by: the large set of debugify tests enabled here. Note the InstCombine test (cast-mul-select.ll) that hasn't been fully enabled: this is because there's a debug-info sinking piece of code there that hasn't been instrumented.
45 lines
1.5 KiB
LLVM
45 lines
1.5 KiB
LLVM
; This test makes sure that these instructions are properly constant propagated.
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; RUN: opt < %s -data-layout="e-p:32:32" -passes=debugify,sccp -S | FileCheck %s
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; RUN: opt < %s -data-layout="E-p:32:32" -passes=debugify,sccp -S | FileCheck %s
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; RUN: opt < %s -data-layout="E-p:32:32" -passes=debugify,ipsccp -S | FileCheck %s
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; RUN: opt < %s -data-layout="E-p:32:32" -passes=debugify,ipsccp -S --try-experimental-debuginfo-iterators | FileCheck %s
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@X = constant i32 42 ; <ptr> [#uses=1]
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@Y = constant [2 x { i32, float }] [ { i32, float } { i32 12, float 1.000000e+00 }, { i32, float } { i32 37, float 0x3FF3B2FEC0000000 } ] ; <ptr> [#uses=2]
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define i32 @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 42
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; CHECK-NEXT: ret
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%B = load i32, ptr @X ; <i32> [#uses=1]
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ret i32 %B
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}
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define float @test2() {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: call void @llvm.dbg.value(metadata ptr getelementptr
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; CHECK-NEXT: call void @llvm.dbg.value(metadata float 0x3FF3B2FEC0000000
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; CHECK-NEXT: ret
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%A = getelementptr [2 x { i32, float }], ptr @Y, i64 0, i64 1, i32 1 ; <ptr> [#uses=1]
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%B = load float, ptr %A ; <float> [#uses=1]
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ret float %B
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}
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define i32 @test3() {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 12
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; CHECK-NEXT: ret
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%B = load i32, ptr @Y
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ret i32 %B
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}
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define i8 @test4() {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i8
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; CHECK-NEXT: ret
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%B = load i8, ptr @X
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ret i8 %B
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}
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