llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-23 17:32:49 +00:00

History

Chris Lattner 6dec0b09d5 Fix a FIXME: Select instructions on longs were miscompiled.

While we're at it, improve codegen of select instructions.  For this
testcase:

int %test(bool %C, int %A, int %B) {
  %D = select bool %C, int %A, int %B
  ret int %D
}

We used to generate this code:

_test:
        cmpwi cr0, r3, 0
        bne .LBB_test_2 ;
.LBB_test_1:    ;
        b .LBB_test_3   ;
.LBB_test_2:    ;
        or r5, r4, r4
.LBB_test_3:    ;
        or r3, r5, r5
        blr

Now we emit:

_test:
        cmpwi cr0, r3, 0
        bne .LBB_test_2 ;
.LBB_test_1:    ;
        or r4, r5, r5
.LBB_test_2:    ;
        or r3, r4, r4
        blr

-Chris


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19214 91177308-0d34-0410-b5e6-96231b3b80d8

2005-01-01 16:10:12 +00:00

CBackend

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PowerPC

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Skeleton

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Sparc

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SparcV8

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SparcV9