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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-09-05 23:58:02 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-09-05 23:58:02 +0000 |
| commit | 098c6a547fe540b3bbace4c3d4713f400c67b8a9 (patch) | |
| tree | 423e7a59c4df5905f14f8c8ff446868cfd55078e /test/CodeGen/Thumb2 | |
| parent | 366df7945f0e65052d2e1df701ae1fd16b943642 (diff) | |
| download | external_llvm-098c6a547fe540b3bbace4c3d4713f400c67b8a9.zip external_llvm-098c6a547fe540b3bbace4c3d4713f400c67b8a9.tar.gz external_llvm-098c6a547fe540b3bbace4c3d4713f400c67b8a9.tar.bz2 | |
Use predication instead of pseudo-opcodes when folding into MOVCC.
Now that it is possible to dynamically tie MachineInstr operands,
predicated instructions are possible in SSA form:
%vreg3<def> = SUBri %vreg1, -2147483647, pred:14, pred:%noreg, %opt:%noreg
%vreg4<def,tied1> = MOVCCr %vreg3<tied0>, %vreg1, %pred:12, pred:%CPSR
Becomes a predicated SUBri with a tied imp-use:
SUBri %vreg1, -2147483647, pred:13, pred:%CPSR, opt:%noreg, %vreg1<imp-use,tied0>
This means that any instruction that is safe to move can be folded into
a MOVCC, and the *CC pseudo-instructions are no longer needed.
The test case changes reflect that Thumb2SizeReduce recognizes the
predicated instructions. It didn't understand the pseudos.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163274 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/Thumb2')
| -rw-r--r-- | test/CodeGen/Thumb2/thumb2-select_xform.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/test/CodeGen/Thumb2/thumb2-select_xform.ll b/test/CodeGen/Thumb2/thumb2-select_xform.ll index ead198f..ed4d26d 100644 --- a/test/CodeGen/Thumb2/thumb2-select_xform.ll +++ b/test/CodeGen/Thumb2/thumb2-select_xform.ll @@ -5,7 +5,7 @@ define i32 @t1(i32 %a, i32 %b, i32 %c) nounwind { ; CHECK: mvn r0, #-2147483648 ; CHECK: cmp r2, #10 ; CHECK: it le -; CHECK: addle.w r1, r1, r0 +; CHECK: addle r1, r0 ; CHECK: mov r0, r1 %tmp1 = icmp sgt i32 %c, 10 %tmp2 = select i1 %tmp1, i32 0, i32 2147483647 @@ -30,7 +30,7 @@ define i32 @t3(i32 %a, i32 %b, i32 %c, i32 %d) nounwind { ; CHECK: t3 ; CHECK: cmp r2, #10 ; CHECK: it le -; CHECK: suble.w r1, r1, #10 +; CHECK: suble r1, #10 ; CHECK: mov r0, r1 %tmp1 = icmp sgt i32 %c, 10 %tmp2 = select i1 %tmp1, i32 0, i32 10 |