d0f5a49fb6
This enables the use of debug counters in (non-assertion) release builds. This is useful to enable debugging without having to switch to an assertion-enabled build, which may not always be easy. After some recent improvements, always supporting debug counters no longer has measurable overhead.
28 lines
1.0 KiB
LLVM
28 lines
1.0 KiB
LLVM
; RUN: opt -passes=dce -S -debug-counter=dce-transform=1-2 < %s | FileCheck %s --check-prefixes=CHECK,NO-PRINT
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; RUN: opt -passes=dce -S -debug-counter=dce-transform=1-2 -print-debug-counter-queries < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,PRINT
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;; Test that, with debug counters on, we will skip the first DCE opportunity, perform next 2,
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;; and ignore all the others left.
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; NO-PRINT-NOT: DebugCounter
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; PRINT: DebugCounter dce-transform=0 skip
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; PRINT-NEXT: DebugCounter dce-transform=1 execute
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; PRINT-NEXT: DebugCounter dce-transform=2 execute
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; PRINT-NEXT: DebugCounter dce-transform=3 skip
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; PRINT-NEXT: DebugCounter dce-transform=4 skip
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; CHECK-LABEL: @test
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; CHECK-NEXT: %add1 = add i32 1, 2
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; CHECK-NEXT: %sub1 = sub i32 %add1, 1
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; CHECK-NEXT: %add2 = add i32 1, 2
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; CHECK-NEXT: %add3 = add i32 1, 2
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; CHECK-NEXT: ret void
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define void @test() {
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%add1 = add i32 1, 2
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%sub1 = sub i32 %add1, 1
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%add2 = add i32 1, 2
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%sub2 = sub i32 %add2, 1
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%add3 = add i32 1, 2
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%sub3 = sub i32 %add3, 1
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ret void
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}
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