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8bd22a21c9
Rewrite fixupKills() to use the LivePhysRegs class. Simplifies the code and fixes a bug where the CSR registers in return blocks where missed leading to invalid kill flags. Also remove the unnecessary rule that we wouldn't set kill flags on tied operands. No tests as I have an upcoming commit improving MachineVerifier checks to catch these cases in multiple existing lit tests. llvm-svn: 304055
38 lines
996 B
YAML
38 lines
996 B
YAML
# RUN: llc -march=hexagon -mcpu=hexagonv60 -run-pass post-RA-sched -o - %s | FileCheck %s
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# The post-RA scheduler reorders S2_lsr_r_p and S2_lsr_r_p_or. Both of them
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# use r9, and the last of the two kills it. The kill flag fixup did not
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# correctly update the flag, resulting in both instructions killing r9.
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# CHECK-LABEL: name: foo
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# Check for no-kill of r9 in the first instruction, after reordering:
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# CHECK: %d7 = S2_lsr_r_p_or killed %d7, killed %d1, %r9
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# CHECK: %d13 = S2_lsr_r_p killed %d0, killed %r9
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--- |
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define void @foo() {
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ret void
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}
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...
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---
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name: foo
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tracksRegLiveness: true
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body: |
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bb.0:
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successors: %bb.1
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liveins: %d0, %d1, %r9, %r13
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%d7 = S2_asl_r_p %d0, %r13
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%d5 = S2_asl_r_p %d1, killed %r13
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%d6 = S2_lsr_r_p killed %d0, %r9
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%d7 = S2_lsr_r_p_or killed %d7, killed %d1, killed %r9
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%d1 = A2_combinew killed %r11, killed %r10
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%d0 = A2_combinew killed %r15, killed %r14
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J2_jump %bb.1, implicit-def %pc
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bb.1:
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A2_nop
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...
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