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author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-08-15 11:03:03 +0000 |
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committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-08-15 11:03:03 +0000 |
commit | 7a1e872564a65a8494412d72e15c2f48735d32ab (patch) | |
tree | 673b4b439f7ac57ad80f1ca2ccb0c4616a1aa32c /test | |
parent | c4f661e3dec2e574a59d32bef8679af832349fd2 (diff) | |
download | external_llvm-7a1e872564a65a8494412d72e15c2f48735d32ab.zip external_llvm-7a1e872564a65a8494412d72e15c2f48735d32ab.tar.gz external_llvm-7a1e872564a65a8494412d72e15c2f48735d32ab.tar.bz2 |
Update LocalRewriter::DistanceMap when inserting stack loads.
In the included test case, a stack load was not included in DistanceMap. That
caused TransferDeadness to ignore the instruction, leading to a scavenger
assert.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79090 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r-- | test/CodeGen/Blackfin/2009-08-15-MissingDead.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/CodeGen/Blackfin/2009-08-15-MissingDead.ll b/test/CodeGen/Blackfin/2009-08-15-MissingDead.ll new file mode 100644 index 0000000..656cd33 --- /dev/null +++ b/test/CodeGen/Blackfin/2009-08-15-MissingDead.ll @@ -0,0 +1,25 @@ +; RUN: llvm-as < %s | llc -march=bfin -verify-machineinstrs + +; LocalRewriter can forget to transfer a <def,dead> flag when setting up call +; argument registers. This then causes register scavenger asserts. + +declare i32 @printf(i8*, i32, float) + +define i32 @testissue(i32 %i, float %x, float %y) { + br label %bb1 + +bb1: ; preds = %bb1, %0 + %x2 = fmul float %x, 5.000000e-01 ; <float> [#uses=1] + %y2 = fmul float %y, 0x3FECCCCCC0000000 ; <float> [#uses=1] + %z2 = fadd float %x2, %y2 ; <float> [#uses=1] + %z3 = fadd float undef, %z2 ; <float> [#uses=1] + %i1 = shl i32 %i, 3 ; <i32> [#uses=1] + %j1 = add i32 %i, 7 ; <i32> [#uses=1] + %m1 = add i32 %i1, %j1 ; <i32> [#uses=2] + %b = icmp sle i32 %m1, 6 ; <i1> [#uses=1] + br i1 %b, label %bb1, label %bb2 + +bb2: ; preds = %bb1 + %1 = call i32 @printf(i8* undef, i32 %m1, float %z3); <i32> [#uses=0] + ret i32 0 +} |