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-rw-r--r--llvm/test/CodeGen/AArch64/GlobalISel/legalize-ext-csedebug-output.mir35
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diff --git a/llvm/test/CodeGen/AArch64/GlobalISel/legalize-ext-csedebug-output.mir b/llvm/test/CodeGen/AArch64/GlobalISel/legalize-ext-csedebug-output.mir
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+++ b/llvm/test/CodeGen/AArch64/GlobalISel/legalize-ext-csedebug-output.mir
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+# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - -enable-cse-in-legalizer=1 -debug-only=cseinfo 2>&1 | FileCheck %s
+# Test the -debug-only=cseinfo option here to make sure we're recording new instructions and printing the hit count
+# at the end.
+# REQUIRES: asserts
+---
+name: test_cse_in_legalizer
+body: |
+ bb.0.entry:
+ ; CHECK: CSEInfo::Add MI: %{{[0-9]+}}:_(s8) = G_TRUNC
+ ; CHECK: CSEInfo::Add MI: %{{[0-9]+}}:_(s32) = G_ZEXT
+ ; CHECK: CSEInfo::Add MI: %{{[0-9]+}}:_(s8) = G_TRUNC
+ ; CHECK: CSEInfo::Add MI: %{{[0-9]+}}:_(s32) = G_ZEXT
+ ; CHECK: CSEInfo::Recording new MI G_CONSTANT
+ ; CHECK: CSEInfo::Recording new MI G_CONSTANT
+ ; CHECK: CSEInfo::Recording new MI G_TRUNC
+ ; CHECK: CSEInfo::Recording new MI G_TRUNC
+ ; CHECK: CSEInfo::Recording new MI G_AND
+ ; CHECK: CSEInfo::Recording new MI G_AND
+ ; CHECK: CSEInfo::Found Instr %{{[0-9]+}}:_(s32) = G_CONSTANT
+ ; CHECK: CSEInfo::Found Instr %{{[0-9]+}}:_(s32) = G_TRUNC
+ ; CHECK: CSEInfo::Found Instr %{{[0-9]+}}:_(s32) = G_AND
+ ; Note - these will be sensitive the opcode numbers. If
+ ; frequently modifying generic opcodes, we could just regex
+ ; the opcodes in the following lines instead of checking for
+ ; specific opcode numbers.
+ ; CHECK: CSEInfo::CSE Hit for Opc 42 : 1
+ ; CHECK: CSEInfo::CSE Hit for Opc 84 : 1
+ ; CHECK: CSEInfo::CSE Hit for Opc 83 : 1
+ %0:_(s64) = COPY $x0
+ %1:_(s8) = G_TRUNC %0(s64)
+ %19:_(s32) = G_ZEXT %1(s8)
+ $w0 = COPY %19(s32)
+ %2:_(s8) = G_TRUNC %0(s64)
+ %20:_(s32) = G_ZEXT %2(s8)
+ $w0 = COPY %20(s32)
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