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| author | David Goodwin <david_goodwin@apple.com> | 2009-06-26 16:10:07 +0000 |
|---|---|---|
| committer | David Goodwin <david_goodwin@apple.com> | 2009-06-26 16:10:07 +0000 |
| commit | 2dbffd44a6d2bdc31f6f24a44e98c3dbaca3bea6 (patch) | |
| tree | be9a0ca7a0ec94157c4f966f4d68d0b38998af79 | |
| parent | deb5adead1c7ccad508b3de9fc528fc0e08980ad (diff) | |
| download | external_llvm-2dbffd44a6d2bdc31f6f24a44e98c3dbaca3bea6.tar.gz external_llvm-2dbffd44a6d2bdc31f6f24a44e98c3dbaca3bea6.tar.bz2 external_llvm-2dbffd44a6d2bdc31f6f24a44e98c3dbaca3bea6.zip | |
Currently there is a pattern for the thumb-2 MOV 16-bit immediate instruction. That instruction cannot write the flags so it should use T2I instead of T2sI.
Also, added a pattern for the thumb-2 MOV of shifted immediate since that can encode immediates not encodable by the 16-bit immediate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74288 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/ARM/ARMInstrThumb2.td | 11 | ||||
| -rw-r--r-- | test/CodeGen/Thumb2/thumb2-mov3.ll | 33 | ||||
| -rw-r--r-- | test/CodeGen/Thumb2/thumb2-mov4.ll | 8 |
3 files changed, 49 insertions, 3 deletions
diff --git a/lib/Target/ARM/ARMInstrThumb2.td b/lib/Target/ARM/ARMInstrThumb2.td index ec46df890e..4736711926 100644 --- a/lib/Target/ARM/ARMInstrThumb2.td +++ b/lib/Target/ARM/ARMInstrThumb2.td @@ -409,9 +409,14 @@ def t2MOVr : T2sI<(outs GPR:$dst), (ins GPR:$src), "mov", " $dst, $src", []>; let isReMaterializable = 1, isAsCheapAsAMove = 1 in -def t2MOVi16 : T2sI<(outs GPR:$dst), (ins i32imm:$src), - "movw", " $dst, $src", - [(set GPR:$dst, imm0_65535:$src)]>; +def t2MOVi : T2sI<(outs GPR:$dst), (ins t2_so_imm:$src), + "mov", " $dst, $src", + [(set GPR:$dst, t2_so_imm:$src)]>; + +let isReMaterializable = 1, isAsCheapAsAMove = 1 in +def t2MOVi16 : T2I<(outs GPR:$dst), (ins i32imm:$src), + "movw", " $dst, $src", + [(set GPR:$dst, imm0_65535:$src)]>; // FIXME: Also available in ARM mode. let Constraints = "$src = $dst" in diff --git a/test/CodeGen/Thumb2/thumb2-mov3.ll b/test/CodeGen/Thumb2/thumb2-mov3.ll new file mode 100644 index 0000000000..f8f06af487 --- /dev/null +++ b/test/CodeGen/Thumb2/thumb2-mov3.ll @@ -0,0 +1,33 @@ +; RUN: llvm-as < %s | llc | grep {mov\\W*r\[0-9\],\\W*#\[0-9\]*} | grep {#171\\|#1179666\\|#872428544\\|#1448498774\\|#66846720} | Count 5 + +target triple = "thumbv7-apple-darwin" + +; 171 = 0x000000ab +define i32 @f1(i32 %a) { + %tmp = add i32 0, 171 + ret i32 %tmp +} + +; 1179666 = 0x00120012 +define i32 @f2(i32 %a) { + %tmp = add i32 0, 1179666 + ret i32 %tmp +} + +; 872428544 = 0x34003400 +define i32 @f3(i32 %a) { + %tmp = add i32 0, 872428544 + ret i32 %tmp +} + +; 1448498774 = 0x56565656 +define i32 @f4(i32 %a) { + %tmp = add i32 0, 1448498774 + ret i32 %tmp +} + +; 66846720 = 0x03fc0000 +define i32 @f5(i32 %a) { + %tmp = add i32 0, 66846720 + ret i32 %tmp +} diff --git a/test/CodeGen/Thumb2/thumb2-mov4.ll b/test/CodeGen/Thumb2/thumb2-mov4.ll new file mode 100644 index 0000000000..e905b530f1 --- /dev/null +++ b/test/CodeGen/Thumb2/thumb2-mov4.ll @@ -0,0 +1,8 @@ +; RUN: llvm-as < %s | llc | grep {movw\\W*r\[0-9\],\\W*#\[0-9\]*} | grep {#65535} | Count 1 + +target triple = "thumbv7-apple-darwin" + +define i32 @f6(i32 %a) { + %tmp = add i32 0, 65535 + ret i32 %tmp +} |