ea796e5237
MULS adversely affects performance on many implementations. Where this is the case, we prefer not to shrink MUL to MULS.
20 lines
523 B
YAML
20 lines
523 B
YAML
# RUN: llc -mtriple=thumbv7m-none-eabi -mcpu=cortex-m33 -run-pass=thumb2-reduce-size %s -o - | FileCheck %s --check-prefix=MUL
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# RUN: llc -mtriple=thumbv7m-none-eabi --run-pass=thumb2-reduce-size %s -o - | FileCheck %s --check-prefix=MULS
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---
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name: test
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body: |
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bb.0:
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$r2 = tMOVr $r0, 14, _
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$r0 = t2MOVi 1, 14, _, _
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$r0 = t2MUL $r2, killed $r0, 14, _
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tBX_RET 14, _, implicit $r0
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...
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# MUL-LABEL: test
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# MUL: t2MUL
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# MUL-NOT: tMUL
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# MULS-LABEL: test
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# MULS: tMUL
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# MULS-NOT: t2MUL |