30 lines
781 B
Plaintext
30 lines
781 B
Plaintext
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# RUN: llc -o - %s -mtriple=aarch64 -run-pass branch-folder -verify-machineinstrs | FileCheck %s
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# Check that BranchFolding pass is able to hoist a common instruction into a block with a single branch instruction.
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name: func
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tracksRegLiveness: true
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body: |
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bb.0:
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; CHECK-LABEL: name: func
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; CHECK-LABEL: bb.0:
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; CHECK: $x0 = ADDXri $x0, 1, 0
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; CHECK: CBZX $x1, %bb.2
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liveins: $x0, $x1
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CBZX $x1, %bb.2
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bb.1:
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; CHECK-LABEL: bb.1:
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; CHECK-NOT: $x0 = ADDXri $x0, 1, 0
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liveins: $x0
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$x0 = ADDXri $x0, 1, 0
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$x0 = ADDXri $x0, 2, 0
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RET_ReallyLR implicit $x0
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bb.2:
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; CHECK-LABEL: bb.2:
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; CHECK-NOT: $x0 = ADDXri $x0, 1, 0
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liveins: $x0
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$x0 = ADDXri $x0, 1, 0
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$x0 = ADDXri $x0, 3, 0
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RET_ReallyLR implicit $x0
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...
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