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author | Evan Cheng <evan.cheng@apple.com> | 2008-02-26 08:03:41 +0000 |
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committer | Evan Cheng <evan.cheng@apple.com> | 2008-02-26 08:03:41 +0000 |
commit | c886c460e4fc305a1b79d1e7782584c7aa7aa91f (patch) | |
tree | d9131eeb7943a83dd5ca0889343fd2ad8e006b3c /test/CodeGen | |
parent | 0254e7033a1d879357e582dcdc1943e656192768 (diff) | |
download | external_llvm-c886c460e4fc305a1b79d1e7782584c7aa7aa91f.zip external_llvm-c886c460e4fc305a1b79d1e7782584c7aa7aa91f.tar.gz external_llvm-c886c460e4fc305a1b79d1e7782584c7aa7aa91f.tar.bz2 |
This is possible:
vr1 = extract_subreg vr2, 3
...
vr3 = extract_subreg vr1, 2
The end result is vr3 is equal to vr2 with subidx 2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47592 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
-rw-r--r-- | test/CodeGen/X86/2008-02-25-X86-64-CoalescerBug.ll | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2008-02-25-X86-64-CoalescerBug.ll b/test/CodeGen/X86/2008-02-25-X86-64-CoalescerBug.ll new file mode 100644 index 0000000..5d60bde --- /dev/null +++ b/test/CodeGen/X86/2008-02-25-X86-64-CoalescerBug.ll @@ -0,0 +1,55 @@ +; RUN: llvm-as < %s | llc -march=x86-64 + + %struct.XX = type <{ i8 }> + %struct.YY = type { i64 } + %struct.ZZ = type opaque + +define i8 @f(%struct.XX*** %fontMap, %struct.XX* %uen) signext { +entry: + %tmp45 = add i16 0, 1 ; <i16> [#uses=2] + br i1 false, label %bb124, label %bb53 + +bb53: ; preds = %entry + %tmp55 = call %struct.YY** @AA( i64 1, %struct.XX* %uen ) ; <%struct.YY**> [#uses=3] + %tmp2728128 = load %struct.XX** null ; <%struct.XX*> [#uses=1] + %tmp61 = load %struct.YY** %tmp55, align 8 ; <%struct.YY*> [#uses=1] + %tmp62 = getelementptr %struct.YY* %tmp61, i32 0, i32 0 ; <i64*> [#uses=1] + %tmp63 = load i64* %tmp62, align 8 ; <i64> [#uses=1] + %tmp6566 = zext i16 %tmp45 to i64 ; <i64> [#uses=1] + %tmp67 = shl i64 %tmp6566, 1 ; <i64> [#uses=1] + call void @BB( %struct.YY** %tmp55, i64 %tmp67, i8 signext 0, %struct.XX* %uen ) + %tmp121131 = icmp eq i16 %tmp45, 1 ; <i1> [#uses=1] + br i1 %tmp121131, label %bb124, label %bb70.preheader + +bb70.preheader: ; preds = %bb53 + %tmp72 = bitcast %struct.XX* %tmp2728128 to %struct.ZZ*** ; <%struct.ZZ***> [#uses=1] + br label %bb70 + +bb70: ; preds = %bb119, %bb70.preheader + %indvar133 = phi i32 [ %indvar.next134, %bb119 ], [ 0, %bb70.preheader ] ; <i32> [#uses=2] + %tmp.135 = trunc i64 %tmp63 to i32 ; <i32> [#uses=1] + %tmp136 = shl i32 %indvar133, 1 ; <i32> [#uses=1] + %DD = add i32 %tmp136, %tmp.135 ; <i32> [#uses=1] + %tmp73 = load %struct.ZZ*** %tmp72, align 8 ; <%struct.ZZ**> [#uses=0] + br i1 false, label %bb119, label %bb77 + +bb77: ; preds = %bb70 + %tmp8384 = trunc i32 %DD to i16 ; <i16> [#uses=1] + %tmp85 = sub i16 0, %tmp8384 ; <i16> [#uses=1] + store i16 %tmp85, i16* null, align 8 + call void @CC( %struct.YY** %tmp55, i64 0, i64 2, i8* null, %struct.XX* %uen ) + ret i8 0 + +bb119: ; preds = %bb70 + %indvar.next134 = add i32 %indvar133, 1 ; <i32> [#uses=1] + br label %bb70 + +bb124: ; preds = %bb53, %entry + ret i8 undef +} + +declare %struct.YY** @AA(i64, %struct.XX*) + +declare void @BB(%struct.YY**, i64, i8 signext , %struct.XX*) + +declare void @CC(%struct.YY**, i64, i64, i8*, %struct.XX*) |