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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-06-16 22:50:38 +0000 |
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| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-06-16 22:50:38 +0000 |
| commit | c02a6fa7d8f0ccf2e0059bc40978a466fff3fcab (patch) | |
| tree | c309fd07bf5e332d5bb360a75e061113ee11e079 /test/CodeGen | |
| parent | ed344d2e683d741a591a681157119e8fc3ee2827 (diff) | |
| download | llvm-c02a6fa7d8f0ccf2e0059bc40978a466fff3fcab.tar.gz llvm-c02a6fa7d8f0ccf2e0059bc40978a466fff3fcab.tar.bz2 llvm-c02a6fa7d8f0ccf2e0059bc40978a466fff3fcab.tar.xz | |
Don't use register classes larger than TLI->getRegClassFor(VT).
In Thumb mode we cannot handle GPR virtual registers, even though some
instructions can. When isel is lowering a CopyFromReg, it should limit
itself to subclasses of getRegClassFor(VT).
<rdar://problem/9624323>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133210 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/Thumb/2011-06-16-NoGPRs.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGen/Thumb/2011-06-16-NoGPRs.ll b/test/CodeGen/Thumb/2011-06-16-NoGPRs.ll new file mode 100644 index 0000000000..d39a76085a --- /dev/null +++ b/test/CodeGen/Thumb/2011-06-16-NoGPRs.ll @@ -0,0 +1,24 @@ +; RUN: llc < %s +; +; This test would crash because isel creates a GPR register for the return +; value from f1. The register is only used by tBLXr_r9 which accepts a full GPR +; register, but we cannot have live GPRs in thumb mode because we don't know how +; to spill them. +; +; <rdar://problem/9624323> +target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32" +target triple = "thumbv6-apple-darwin10" + +%0 = type opaque + +declare i8* (i8*, i8*, ...)* @f1(i8*, i8*) optsize +declare i8* @f2(i8*, i8*, ...) + +define internal void @f(i8* %self, i8* %_cmd, %0* %inObjects, %0* %inIndexes) optsize ssp { +entry: + %call14 = tail call i8* (i8*, i8*, ...)* (i8*, i8*)* @f1(i8* undef, i8* %_cmd) optsize + %0 = bitcast i8* (i8*, i8*, ...)* %call14 to void (i8*, i8*, %0*, %0*)* + tail call void %0(i8* %self, i8* %_cmd, %0* %inObjects, %0* %inIndexes) optsize + tail call void bitcast (i8* (i8*, i8*, ...)* @f2 to void (i8*, i8*, i32, %0*, %0*)*)(i8* %self, i8* undef, i32 2, %0* %inIndexes, %0* undef) optsize + ret void +} |