diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/Mips/2013-11-18-fp64-const0.ll | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/test/CodeGen/Mips/2013-11-18-fp64-const0.ll b/test/CodeGen/Mips/2013-11-18-fp64-const0.ll new file mode 100644 index 0000000000..f8390d9a1c --- /dev/null +++ b/test/CodeGen/Mips/2013-11-18-fp64-const0.ll @@ -0,0 +1,31 @@ +; RUN: llc -march=mips -mattr=-fp64 < %s | FileCheck -check-prefix=CHECK-FP32 %s +; RUN: llc -march=mips -mattr=+fp64 < %s | FileCheck -check-prefix=CHECK-FP64 %s + +; This test case is a simplified version of an llvm-stress generated test with +; seed=3718491962. +; It originally failed on MIPS32 with FP64 with the following error: +; LLVM ERROR: ran out of registers during register allocation +; This was caused by impossible register class restrictions caused by the use +; of BuildPairF64 instead of BuildPairF64_64. + +define void @autogen_SD3718491962() { +BB: + ; CHECK-FP32: mtc1 $zero, $f{{[0-3]*[02468]}} + ; CHECK-FP32: mtc1 $zero, $f{{[0-3]*[13579]}} + + ; CHECK-FP64: mtc1 $zero, $f{{[0-9]+}} + ; CHECK-FP64-NOT: mtc1 $zero, + ; FIXME: A redundant mthc1 is currently emitted. Add a -NOT when it is + ; eliminated + + %Cmp = fcmp ule double 0.000000e+00, undef + %Cmp11 = fcmp ueq double 0xFDBD965CF1BB7FDA, undef + br label %CF88 + +CF88: ; preds = %CF86 + %Sl18 = select i1 %Cmp, i1 %Cmp11, i1 %Cmp + br i1 %Sl18, label %CF88, label %CF85 + +CF85: ; preds = %CF88 + ret void +} |