From 7a1e872564a65a8494412d72e15c2f48735d32ab Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Sat, 15 Aug 2009 11:03:03 +0000 Subject: 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 --- test/CodeGen/Blackfin/2009-08-15-MissingDead.ll | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 test/CodeGen/Blackfin/2009-08-15-MissingDead.ll (limited to 'test') 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 0000000000..656cd337aa --- /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 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 ; [#uses=1] + %y2 = fmul float %y, 0x3FECCCCCC0000000 ; [#uses=1] + %z2 = fadd float %x2, %y2 ; [#uses=1] + %z3 = fadd float undef, %z2 ; [#uses=1] + %i1 = shl i32 %i, 3 ; [#uses=1] + %j1 = add i32 %i, 7 ; [#uses=1] + %m1 = add i32 %i1, %j1 ; [#uses=2] + %b = icmp sle i32 %m1, 6 ; [#uses=1] + br i1 %b, label %bb1, label %bb2 + +bb2: ; preds = %bb1 + %1 = call i32 @printf(i8* undef, i32 %m1, float %z3); [#uses=0] + ret i32 0 +} -- cgit v1.2.3