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| author | Eric Christopher <echristo@apple.com> | 2012-05-07 05:46:43 +0000 |
|---|---|---|
| committer | Eric Christopher <echristo@apple.com> | 2012-05-07 05:46:43 +0000 |
| commit | 60cfc7908ef6acdfab0ea4af5b2c50087a8f36d8 (patch) | |
| tree | e7a4f924a77842b7708fc4ea863967485ffda56d | |
| parent | 5ac47bba83ac1a1b79addc8d5e36e8a468324153 (diff) | |
| download | llvm-60cfc7908ef6acdfab0ea4af5b2c50087a8f36d8.tar.gz llvm-60cfc7908ef6acdfab0ea4af5b2c50087a8f36d8.tar.bz2 llvm-60cfc7908ef6acdfab0ea4af5b2c50087a8f36d8.tar.xz | |
Add support for the 'N' inline asm constraint.
Patch by Jack Carter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156284 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/Mips/MipsISelLowering.cpp | 11 | ||||
| -rw-r--r-- | test/CodeGen/Mips/inlineasm-cnstrnt-bad-N.ll | 17 | ||||
| -rw-r--r-- | test/CodeGen/Mips/inlineasm_constraint.ll | 6 |
3 files changed, 34 insertions, 0 deletions
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp index 3f445a0cc8..ded6aa0608 100644 --- a/lib/Target/Mips/MipsISelLowering.cpp +++ b/lib/Target/Mips/MipsISelLowering.cpp @@ -3043,6 +3043,7 @@ MipsTargetLowering::getSingleConstraintMatchWeight( case 'J': // integer zero case 'K': // unsigned 16 bit immediate case 'L': // signed 32 bit immediate where lower 16 bits are 0 + case 'N': // immediate in the range of -65535 to -1 (inclusive) if (isa<ConstantInt>(CallOperandVal)) weight = CW_Constant; break; @@ -3135,6 +3136,16 @@ void MipsTargetLowering::LowerAsmOperandForConstraint(SDValue Op, } } return; + case 'N': // immediate in the range of -65535 to -1 (inclusive) + if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) { + EVT Type = Op.getValueType(); + int64_t Val = C->getSExtValue(); + if ((Val >= -65535) && (Val <= -1)) { + Result = DAG.getTargetConstant(Val, Type); + break; + } + } + return; } if (Result.getNode()) { diff --git a/test/CodeGen/Mips/inlineasm-cnstrnt-bad-N.ll b/test/CodeGen/Mips/inlineasm-cnstrnt-bad-N.ll new file mode 100644 index 0000000000..770669d913 --- /dev/null +++ b/test/CodeGen/Mips/inlineasm-cnstrnt-bad-N.ll @@ -0,0 +1,17 @@ + +;This is a negative test. The constant value given for the constraint (N). +;immediate in the range of -65535 to -1 (inclusive). +;Our example uses the positive value 3. +; +; RUN: not llc -march=mipsel < %s 2> %t +; RUN: FileCheck --check-prefix=CHECK-ERRORS < %t %s + +define i32 @main() nounwind { +entry: + +;CHECK-ERRORS: error: invalid operand for inline asm constraint 'N' + + tail call i32 asm sideeffect "addi $0,$1,$2", "=r,r,N"(i32 7, i32 3) nounwind + ret i32 0 +} + diff --git a/test/CodeGen/Mips/inlineasm_constraint.ll b/test/CodeGen/Mips/inlineasm_constraint.ll index 34d0657e35..06ca7219fe 100644 --- a/test/CodeGen/Mips/inlineasm_constraint.ll +++ b/test/CodeGen/Mips/inlineasm_constraint.ll @@ -33,5 +33,11 @@ entry: ; CHECK: #NO_APP tail call i32 asm sideeffect "add $0,$1,$3\0A\09", "=r,r,L,r"(i32 7, i32 1048576, i32 0) nounwind +; Now N with -3 +; CHECK: #APP +; CHECK: addi ${{[0-9]+}},${{[0-9]+}},-3 +; CHECK: #NO_APP + tail call i32 asm sideeffect "addi $0,$1,$2", "=r,r,N"(i32 7, i32 -3) nounwind + ret i32 0 } |