tests_lit/llvm2ice_tests/nacl-atomic-cmpxchg-optimization.ll - Issue 1312433004: Weight variables by their number of uses for register allocation.

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Side by Side Diff: tests_lit/llvm2ice_tests/nacl-atomic-cmpxchg-optimization.ll

Issue 1312433004: Weight variables by their number of uses for register allocation. (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master

Patch Set: Created 5 years, 3 months ago

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1 ; This tests the optimization of atomic cmpxchg w/ following cmp + branches.	1 ; This tests the optimization of atomic cmpxchg w/ following cmp + branches.

2	2

3 ; RUN: %p2i -i %s --filetype=obj --disassemble --args -O2 \	3 ; RUN: %p2i -i %s --filetype=obj --disassemble --args -O2 \

4 ; RUN: \| FileCheck --check-prefix=O2 %s	4 ; RUN: \| FileCheck --check-prefix=O2 %s

5 ; RUN: %p2i -i %s --filetype=obj --disassemble --args -Om1 \	5 ; RUN: %p2i -i %s --filetype=obj --disassemble --args -Om1 \

6 ; RUN: \| FileCheck --check-prefix=OM1 %s	6 ; RUN: \| FileCheck --check-prefix=OM1 %s

7	7

8 declare i32 @llvm.nacl.atomic.cmpxchg.i32(i32*, i32, i32, i32, i32)	8 declare i32 @llvm.nacl.atomic.cmpxchg.i32(i32*, i32, i32, i32, i32)

9	9

10	10

(...skipping 110 matching lines...) Expand 10 before \| Expand all \| Expand 10 after Loading...
121 i32 %desired, i32 6, i32 6)	121 i32 %desired, i32 6, i32 6)

122 %success = icmp eq i32 %old, %expected	122 %success = icmp eq i32 %old, %expected

123 br i1 %success, label %done, label %loop	123 br i1 %success, label %done, label %loop

124	124

125 done:	125 done:

126 %r = zext i1 %success to i32	126 %r = zext i1 %success to i32

127 ret i32 %r	127 ret i32 %r

128 }	128 }

129 ; O2-LABEL: test_atomic_cmpxchg_no_opt2	129 ; O2-LABEL: test_atomic_cmpxchg_no_opt2

130 ; O2: lock cmpxchg DWORD PTR [e{{[^a].}}],e{{[^a]}}	130 ; O2: lock cmpxchg DWORD PTR [e{{[^a].}}],e{{[^a]}}

131 ; O2: mov {{.*}}
ascull 2015/08/26 19:24:36 Discussed with Jan. This used to match a register Discussed with Jan. This used to match a register spill which is no longer present.
132 ; O2: cmp	131 ; O2: cmp

133 ; O2: sete	132 ; O2: sete

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