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| author | Anna Thomas <anna@azul.com> | 2017-09-13 19:35:45 +0000 |
|---|---|---|
| committer | Anna Thomas <anna@azul.com> | 2017-09-13 19:35:45 +0000 |
| commit | 19529f75b9e5a476c82b012cf3d6a291901fc04a (patch) | |
| tree | 5128216153af30bf58d48f4d84bdfd0541973c57 /llvm/test/Transforms/LoopVectorize | |
| parent | 2ba37d4b3e23fc6374b8b680a3a513f09978fc7b (diff) | |
| download | bcm5719-llvm-19529f75b9e5a476c82b012cf3d6a291901fc04a.tar.gz bcm5719-llvm-19529f75b9e5a476c82b012cf3d6a291901fc04a.zip | |
[LV] Avoid computing the register usage for default VF. NFC
These are changes to reduce redundant computations when calculating a
feasible vectorization factor:
1. early return when target has no vector registers
2. don't compute register usage for the default VF.
Suggested during review for D37702.
llvm-svn: 313176
Diffstat (limited to 'llvm/test/Transforms/LoopVectorize')
| -rw-r--r-- | llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll b/llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll index 83974d2db80..9b276aa2bd7 100644 --- a/llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll +++ b/llvm/test/Transforms/LoopVectorize/X86/reg-usage.ll @@ -10,8 +10,6 @@ define i32 @foo() { ; register usage doesn't exceed 16. ; ; CHECK-LABEL: foo -; CHECK: LV(REG): VF = 4 -; CHECK-NEXT: LV(REG): Found max usage: 4 ; CHECK: LV(REG): VF = 8 ; CHECK-NEXT: LV(REG): Found max usage: 7 ; CHECK: LV(REG): VF = 16 @@ -48,8 +46,6 @@ define i32 @goo() { ; it will not have vector version and the vector register usage will not exceed the ; available vector register number. ; CHECK-LABEL: goo -; CHECK: LV(REG): VF = 4 -; CHECK-NEXT: LV(REG): Found max usage: 4 ; CHECK: LV(REG): VF = 8 ; CHECK-NEXT: LV(REG): Found max usage: 7 ; CHECK: LV(REG): VF = 16 |
