diff options
| author | David Majnemer <david.majnemer@gmail.com> | 2016-01-27 02:59:41 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2016-01-27 02:59:41 +0000 |
| commit | fccf5c6e01a81b0f739e14302bd821a4f86bee94 (patch) | |
| tree | 9de186ca7a4caf5db2f6c7615180cb510d5edf49 /llvm/test/Transforms/SimplifyCFG/X86 | |
| parent | c761afd1d1db72fc7986f76f23fed1dd8a1a3ad7 (diff) | |
| download | bcm5719-llvm-fccf5c6e01a81b0f739e14302bd821a4f86bee94.tar.gz bcm5719-llvm-fccf5c6e01a81b0f739e14302bd821a4f86bee94.zip | |
Revert "Revert "[SimplifyCFG] allow speculation of exactly one expensive instruction (PR24818)""
This reverts commit r258903 which reverted r255660. r258903 was an
accidental commit and should not have been committed.
llvm-svn: 258905
Diffstat (limited to 'llvm/test/Transforms/SimplifyCFG/X86')
| -rw-r--r-- | llvm/test/Transforms/SimplifyCFG/X86/speculate-cttz-ctlz.ll | 24 |
1 files changed, 6 insertions, 18 deletions
diff --git a/llvm/test/Transforms/SimplifyCFG/X86/speculate-cttz-ctlz.ll b/llvm/test/Transforms/SimplifyCFG/X86/speculate-cttz-ctlz.ll index 69f6c69059d..bee80e6acce 100644 --- a/llvm/test/Transforms/SimplifyCFG/X86/speculate-cttz-ctlz.ll +++ b/llvm/test/Transforms/SimplifyCFG/X86/speculate-cttz-ctlz.ll @@ -7,9 +7,7 @@ define i64 @test1(i64 %A) { ; ALL-LABEL: @test1( ; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i64 %A, 0 ; ALL: [[CTLZ:%[A-Za-z0-9]+]] = tail call i64 @llvm.ctlz.i64(i64 %A, i1 true) -; LZCNT-NEXT: select i1 [[COND]], i64 64, i64 [[CTLZ]] -; BMI-NOT: select -; GENERIC-NOT: select +; ALL-NEXT: select i1 [[COND]], i64 64, i64 [[CTLZ]] ; ALL: ret entry: %tobool = icmp eq i64 %A, 0 @@ -28,9 +26,7 @@ define i32 @test2(i32 %A) { ; ALL-LABEL: @test2( ; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i32 %A, 0 ; ALL: [[CTLZ:%[A-Za-z0-9]+]] = tail call i32 @llvm.ctlz.i32(i32 %A, i1 true) -; LZCNT-NEXT: select i1 [[COND]], i32 32, i32 [[CTLZ]] -; BMI-NOT: select -; GENERIC-NOT: select +; ALL-NEXT: select i1 [[COND]], i32 32, i32 [[CTLZ]] ; ALL: ret entry: %tobool = icmp eq i32 %A, 0 @@ -50,9 +46,7 @@ define signext i16 @test3(i16 signext %A) { ; ALL-LABEL: @test3( ; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i16 %A, 0 ; ALL: [[CTLZ:%[A-Za-z0-9]+]] = tail call i16 @llvm.ctlz.i16(i16 %A, i1 true) -; LZCNT-NEXT: select i1 [[COND]], i16 16, i16 [[CTLZ]] -; BMI-NOT: select -; GENERIC-NOT: select +; ALL-NEXT: select i1 [[COND]], i16 16, i16 [[CTLZ]] ; ALL: ret entry: %tobool = icmp eq i16 %A, 0 @@ -72,9 +66,7 @@ define i64 @test1b(i64 %A) { ; ALL-LABEL: @test1b( ; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i64 %A, 0 ; ALL: [[CTTZ:%[A-Za-z0-9]+]] = tail call i64 @llvm.cttz.i64(i64 %A, i1 true) -; BMI-NEXT: select i1 [[COND]], i64 64, i64 [[CTTZ]] -; LZCNT-NOT: select -; GENERIC-NOT: select +; ALL-NEXT: select i1 [[COND]], i64 64, i64 [[CTTZ]] ; ALL: ret entry: %tobool = icmp eq i64 %A, 0 @@ -94,9 +86,7 @@ define i32 @test2b(i32 %A) { ; ALL-LABEL: @test2b( ; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i32 %A, 0 ; ALL: [[CTTZ:%[A-Za-z0-9]+]] = tail call i32 @llvm.cttz.i32(i32 %A, i1 true) -; BMI-NEXT: select i1 [[COND]], i32 32, i32 [[CTTZ]] -; LZCNT-NOT: select -; GENERIC-NOT: select +; ALL-NEXT: select i1 [[COND]], i32 32, i32 [[CTTZ]] ; ALL: ret entry: %tobool = icmp eq i32 %A, 0 @@ -116,9 +106,7 @@ define signext i16 @test3b(i16 signext %A) { ; ALL-LABEL: @test3b( ; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i16 %A, 0 ; ALL: [[CTTZ:%[A-Za-z0-9]+]] = tail call i16 @llvm.cttz.i16(i16 %A, i1 true) -; BMI-NEXT: select i1 [[COND]], i16 16, i16 [[CTTZ]] -; LZCNT-NOT: select -; GENERIC-NOT: select +; ALL-NEXT: select i1 [[COND]], i16 16, i16 [[CTTZ]] ; ALL: ret entry: %tobool = icmp eq i16 %A, 0 |
