derek.holloway
7502bf64a4
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103 lines
2.1 KiB
YAML
103 lines
2.1 KiB
YAML
# REQUIRES: asserts
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# RUN: llc -mtriple=riscv64-linux-gnu -x=mir < %s \
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# RUN: -debug-only=machine-scheduler -start-before=machine-scheduler 2>&1 \
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# RUN: -mattr=+fusion-add-mem | FileCheck %s
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# Test add-mem fusion: ADD + load/store with offset 0
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# This fusion combines an address calculation (ADD) with a memory operation
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# that uses the calculated address with zero offset.
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# CHECK: add_lb
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# CHECK: Macro fuse: {{.*}}ADD - LB
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---
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name: add_lb
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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liveins: $x10, $x11, $x12
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%1:gpr = COPY $x10
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%2:gpr = COPY $x11
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%3:gpr = COPY $x12
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%4:gpr = ADD %1, %2
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%5:gpr = LB %4, 0
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%6:gpr = XORI %3, 3
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$x10 = COPY %6
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$x11 = COPY %5
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PseudoRET
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...
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# CHECK: add_lh
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# CHECK: Macro fuse: {{.*}}ADD - LH
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---
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name: add_lh
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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liveins: $x10, $x11, $x12
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%1:gpr = COPY $x10
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%2:gpr = COPY $x11
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%3:gpr = COPY $x12
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%4:gpr = ADD %1, %2
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%5:gpr = LH %4, 0
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%6:gpr = XORI %3, 3
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$x10 = COPY %6
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$x11 = COPY %5
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PseudoRET
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...
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# CHECK: add_sw
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# CHECK: Macro fuse: {{.*}}ADD - SW
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---
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name: add_sw
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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liveins: $x10, $x11, $x12
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%1:gpr = COPY $x10
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%2:gpr = COPY $x11
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%3:gpr = COPY $x12
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%4:gpr = ADD %1, %2
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SW %3, %4, 0
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%5:gpr = XORI %3, 3
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$x10 = COPY %5
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PseudoRET
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...
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# CHECK: add_sd
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# CHECK: Macro fuse: {{.*}}ADD - SD
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---
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name: add_sd
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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liveins: $x10, $x11, $x12
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%1:gpr = COPY $x10
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%2:gpr = COPY $x11
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%3:gpr = COPY $x12
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%4:gpr = ADD %1, %2
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SD %3, %4, 0
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%5:gpr = XORI %3, 3
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$x10 = COPY %5
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PseudoRET
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...
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# Test that add-mem fusion does not happen with non-zero offset
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# CHECK: add_lb_no_fusion
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# CHECK-NOT: Macro fuse: {{.*}}ADD - LB
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---
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name: add_lb_no_fusion
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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liveins: $x10, $x11, $x12
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%1:gpr = COPY $x10
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%2:gpr = COPY $x11
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%3:gpr = COPY $x12
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%4:gpr = ADD %1, %2
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%5:gpr = LB %4, 8
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%6:gpr = XORI %3, 3
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$x10 = COPY %6
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$x11 = COPY %5
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PseudoRET
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...
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