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Merging r232438:

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r232438 | mail | 2015-03-16 19:52:03 -0400 (Mon, 16 Mar 2015) | 6 lines

GCOV: Make the exit block placement from r223193 optional

By default we want our gcov emission to stay 4.2 compatible, which
means we need to continue emit the exit block last by default. We add
an option to emit it before the body for users that need it.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_36@236303 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard committed 2015-05-01 02:43:13 +00:00
1 parent d0505d6ed6
commit a0a6defa18
3 files changed
+33 -14
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test/Transforms/GCOVProfiling/return-block.ll
+16 -7
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@@ -1,8 +1,14 @@
; Inject metadata to set the .gcno file location
; RUN: echo '!19 = !{!"%/T/return-block.ll", !0}' > %t1
; RUN: cat %s %t1 > %t2
; By default, the return block is last.
; RUN: opt -insert-gcov-profiling -disable-output %t2
; RUN: llvm-cov gcov -n -dump %T/return-block.gcno 2>&1 | FileCheck %s
; RUN: llvm-cov gcov -n -dump %T/return-block.gcno 2>&1 | FileCheck -check-prefix=CHECK -check-prefix=RETURN-LAST %s
; But we can optionally emit it second, to match newer gcc versions.
; RUN: opt -insert-gcov-profiling -gcov-exit-block-before-body -disable-output %t2
; RUN: llvm-cov gcov -n -dump %T/return-block.gcno 2>&1 | FileCheck -check-prefix=CHECK -check-prefix=RETURN-SECOND %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@@ -58,9 +64,12 @@ attributes #2 = { nounwind }
!17 = !{!"0xb\007\007\000", !1, !4} ; [ DW_TAG_lexical_block ] [return-block.c]
!18 = !MDLocation(line: 9, column: 1, scope: !4)
; There should be no destination edges for block 1.
; CHECK: Block : 0 Counter : 0
; CHECK-NEXT: Destination Edges : 2 (0),
; CHECK-NEXT: Block : 1 Counter : 0
; CHECK-NEXT: Source Edges : 4 (0),
; CHECK-NEXT: Block : 2 Counter : 0
; There should be no destination edges for the exit block.
; CHECK: Block : 1 Counter : 0
; RETURN-LAST: Destination Edges
; RETURN-SECOND-NOT: Destination Edges
; CHECK: Block : 2 Counter : 0
; CHECK: Block : 4 Counter : 0
; RETURN-LAST-NOT: Destination Edges
; RETURN-SECOND: Destination Edges
; CHECK-NOT: Block :