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rewritten comment for util.m4

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This commit is contained in:
Anton Mitrokhin
2014-07-30 16:43:41 +04:00
parent 7171701599
commit 368d2f18f9
1 changed files with 6 additions and 3 deletions
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9
builtins/util.m4
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@@ -1497,10 +1497,12 @@ define <$1 x $2> @__atomic_compare_exchange_$3_global($2* %ptr, <$1 x $2> %cmp,
per_lane($1, <$1 x MASK> %mask, `
%cmp_LANE_ID = extractelement <$1 x $2> %cmp, i32 LANE
%val_LANE_ID = extractelement <$1 x $2> %val, i32 LANE
;; 3.5 and 3.6 code is the same since m4 has no OR and AND operators
ifelse(LLVM_VERSION,LLVM_3_5,`
%r_LANE_ID_t = cmpxchg $2 * %ptr, $2 %cmp_LANE_ID, $2 %val_LANE_ID seq_cst seq_cst
%r_LANE_ID = extractvalue { $2, i1 } %r_LANE_ID_t, 0
',LLVM_VERSION,LLVM_3_6,` ; this is duplicated for 3.6 since m4 has no OR and AND operators
',LLVM_VERSION,LLVM_3_6,`
%r_LANE_ID_t = cmpxchg $2 * %ptr, $2 %cmp_LANE_ID, $2 %val_LANE_ID seq_cst seq_cst
%r_LANE_ID = extractvalue { $2, i1 } %r_LANE_ID_t, 0
',`
@@ -1514,11 +1516,12 @@ define <$1 x $2> @__atomic_compare_exchange_$3_global($2* %ptr, <$1 x $2> %cmp,
}
define $2 @__atomic_compare_exchange_uniform_$3_global($2* %ptr, $2 %cmp,
$2 %val) nounwind alwaysinline {
$2 %val) nounwind alwaysinline {
;; 3.5 and 3.6 code is the same since m4 has no OR and AND operators
ifelse(LLVM_VERSION,LLVM_3_5,`
%r_t = cmpxchg $2 * %ptr, $2 %cmp, $2 %val seq_cst seq_cst
%r = extractvalue { $2, i1 } %r_t, 0
',LLVM_VERSION,LLVM_3_6,` ; this is duplicated for 3.6 since m4 has no OR and AND operators
',LLVM_VERSION,LLVM_3_6,`
%r_t = cmpxchg $2 * %ptr, $2 %cmp, $2 %val seq_cst seq_cst
%r = extractvalue { $2, i1 } %r_t, 0
',`