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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-08-02 19:13:03 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-08-02 19:13:03 +0000 |
| commit | c59cd9bcd094683529f63fde55589454fa0f7ce1 (patch) | |
| tree | dbaa045bcdd05eacba0a1a6513104e45b0224c7b | |
| parent | 4ab4f7f41649518a684ef340ccd77874fb56bc6e (diff) | |
| download | bcm5719-llvm-c59cd9bcd094683529f63fde55589454fa0f7ce1.tar.gz bcm5719-llvm-c59cd9bcd094683529f63fde55589454fa0f7ce1.zip | |
Never add a kill flag to a constrained physical register in a two-addr instruction.
llvm-svn: 77906
| -rw-r--r-- | llvm/lib/CodeGen/MachineInstr.cpp | 3 | ||||
| -rw-r--r-- | llvm/test/CodeGen/Blackfin/cmp-small-imm.ll | 3 | ||||
| -rw-r--r-- | llvm/test/CodeGen/Blackfin/promote-setcc.ll | 3 |
3 files changed, 3 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp index 4ac2896d370..006a10a0ce6 100644 --- a/llvm/lib/CodeGen/MachineInstr.cpp +++ b/llvm/lib/CodeGen/MachineInstr.cpp @@ -1041,6 +1041,9 @@ bool MachineInstr::addRegisterKilled(unsigned IncomingReg, if (MO.isKill()) // The register is already marked kill. return true; + if (isPhysReg && isRegTiedToDefOperand(i)) + // Two-address uses of physregs must not be marked kill. + return true; MO.setIsKill(); Found = true; } diff --git a/llvm/test/CodeGen/Blackfin/cmp-small-imm.ll b/llvm/test/CodeGen/Blackfin/cmp-small-imm.ll index 7d87cb07f3b..ed285a76036 100644 --- a/llvm/test/CodeGen/Blackfin/cmp-small-imm.ll +++ b/llvm/test/CodeGen/Blackfin/cmp-small-imm.ll @@ -1,7 +1,4 @@ ; RUN: llvm-as < %s | llc -march=bfin > %t -; XFAIL: * -; Assertion failed: (isUsed(Reg) && "Using an undefined register!") -; function forward, file RegisterScavenging.cpp, line 259. define i1 @cmp3(i32 %A) { %R = icmp uge i32 %A, 2 diff --git a/llvm/test/CodeGen/Blackfin/promote-setcc.ll b/llvm/test/CodeGen/Blackfin/promote-setcc.ll index b686c542717..585532521e7 100644 --- a/llvm/test/CodeGen/Blackfin/promote-setcc.ll +++ b/llvm/test/CodeGen/Blackfin/promote-setcc.ll @@ -1,7 +1,4 @@ ; RUN: llvm-as < %s | llc -march=bfin > %t -; XFAIL: * -; Assertion failed: (isUsed(Reg) && "Using an undefined register!"), -; function forward, file RegisterScavenging.cpp, line 259. ; The DAG combiner may sometimes create illegal i16 SETCC operations when run ; after LegalizeOps. Try to tease out all the optimizations in |
