97 lines
2.5 KiB
Plaintext
97 lines
2.5 KiB
Plaintext
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -mtriple aarch64 -run-pass=aarch64-prelegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s
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name: or_same
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $x0
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; Fold: x or x -> x
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; CHECK-LABEL: name: or_same
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; CHECK: liveins: $x0
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; CHECK: %copy:_(s64) = COPY $x0
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; CHECK: $x0 = COPY %copy(s64)
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; CHECK: RET_ReallyLR implicit $x0
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%copy:_(s64) = COPY $x0
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%or:_(s64) = G_OR %copy, %copy
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$x0 = COPY %or(s64)
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RET_ReallyLR implicit $x0
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...
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---
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name: and_same
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $x0
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; Fold: x and x -> x
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; CHECK-LABEL: name: and_same
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; CHECK: liveins: $x0
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; CHECK: %copy:_(s64) = COPY $x0
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; CHECK: $x0 = COPY %copy(s64)
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; CHECK: RET_ReallyLR implicit $x0
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%copy:_(s64) = COPY $x0
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%and:_(s64) = G_AND %copy, %copy
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$x0 = COPY %and(s64)
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RET_ReallyLR implicit $x0
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...
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---
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name: and_same2
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $x0, $x1
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; We can fold when the LHS and RHS are guaranteed to be identical.
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; CHECK-LABEL: name: and_same2
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; CHECK: liveins: $x0, $x1
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; CHECK: %copy1:_(s64) = COPY $x0
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; CHECK: %copy2:_(s64) = COPY $x1
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; CHECK: %or:_(s64) = G_OR %copy1, %copy2
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; CHECK: $x0 = COPY %or(s64)
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; CHECK: RET_ReallyLR implicit $x0
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%copy1:_(s64) = COPY $x0
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%copy2:_(s64) = COPY $x1
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%or:_(s64) = G_OR %copy1, %copy2
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%same_as_or:_(s64) = COPY %or(s64)
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%and:_(s64) = G_AND %or, %same_as_or
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$x0 = COPY %and(s64)
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RET_ReallyLR implicit $x0
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...
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---
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name: or_and_not_same
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $x0, $x1, $x2
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; None of the G_ORs or G_ANDs should be eliminated here, because their LHS
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; and RHS values are different.
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; CHECK-LABEL: name: or_and_not_same
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; CHECK: liveins: $x0, $x1, $x2
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; CHECK: %copy1:_(s64) = COPY $x0
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; CHECK: %copy2:_(s64) = COPY $x1
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; CHECK: %copy3:_(s64) = COPY $x2
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; CHECK: %or1:_(s64) = G_OR %copy1, %copy2
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; CHECK: %or2:_(s64) = G_OR %copy1, %copy3
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; CHECK: %and:_(s64) = G_AND %or1, %or2
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; CHECK: $x0 = COPY %and(s64)
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; CHECK: RET_ReallyLR implicit $x0
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%copy1:_(s64) = COPY $x0
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%copy2:_(s64) = COPY $x1
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%copy3:_(s64) = COPY $x2
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%or1:_(s64) = G_OR %copy1, %copy2
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%or2:_(s64) = G_OR %copy1, %copy3
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%and:_(s64) = G_AND %or1, %or2
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$x0 = COPY %and(s64)
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RET_ReallyLR implicit $x0
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...
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