diff options
Diffstat (limited to 'llvm/test/Transforms/SimplifyCFG/speculate-store.ll')
-rw-r--r-- | llvm/test/Transforms/SimplifyCFG/speculate-store.ll | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/llvm/test/Transforms/SimplifyCFG/speculate-store.ll b/llvm/test/Transforms/SimplifyCFG/speculate-store.ll deleted file mode 100644 index 497e024e248..00000000000 --- a/llvm/test/Transforms/SimplifyCFG/speculate-store.ll +++ /dev/null @@ -1,90 +0,0 @@ -; RUN: opt -simplifycfg -S < %s | FileCheck %s - -define void @ifconvertstore(i32* %A, i32 %B, i32 %C, i32 %D) { -; CHECK-LABEL: @ifconvertstore( -; CHECK: store i32 %B, i32* %A -; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 %D, 42 -; CHECK-NEXT: [[C_B:%.*]] = select i1 [[CMP]], i32 %C, i32 %B, !prof !0 -; CHECK-NEXT: store i32 [[C_B]], i32* %A -; CHECK-NEXT: ret void -; -entry: -; First store to the location. - store i32 %B, i32* %A - %cmp = icmp sgt i32 %D, 42 - br i1 %cmp, label %if.then, label %ret.end, !prof !0 - -; Make sure we speculate stores like the following one. It is cheap compared to -; a mispredicated branch. -if.then: - store i32 %C, i32* %A - br label %ret.end - -ret.end: - ret void -} - -; Store to a different location. - -define void @noifconvertstore1(i32* %A1, i32* %A2, i32 %B, i32 %C, i32 %D) { -; CHECK-LABEL: @noifconvertstore1( -; CHECK-NOT: select -; -entry: - store i32 %B, i32* %A1 - %cmp = icmp sgt i32 %D, 42 - br i1 %cmp, label %if.then, label %ret.end - -if.then: - store i32 %C, i32* %A2 - br label %ret.end - -ret.end: - ret void -} - -; This function could store to our address, so we can't repeat the first store a second time. -declare void @unknown_fun() - -define void @noifconvertstore2(i32* %A, i32 %B, i32 %C, i32 %D) { -; CHECK-LABEL: @noifconvertstore2( -; CHECK-NOT: select -; -entry: -; First store to the location. - store i32 %B, i32* %A - call void @unknown_fun() - %cmp6 = icmp sgt i32 %D, 42 - br i1 %cmp6, label %if.then, label %ret.end - -if.then: - store i32 %C, i32* %A - br label %ret.end - -ret.end: - ret void -} - -; Make sure we don't speculate volatile stores. - -define void @noifconvertstore_volatile(i32* %A, i32 %B, i32 %C, i32 %D) { -; CHECK-LABEL: @noifconvertstore_volatile( -; CHECK-NOT: select -; -entry: -; First store to the location. - store i32 %B, i32* %A - %cmp6 = icmp sgt i32 %D, 42 - br i1 %cmp6, label %if.then, label %ret.end - -if.then: - store volatile i32 %C, i32* %A - br label %ret.end - -ret.end: - ret void -} - -; CHECK: !0 = !{!"branch_weights", i32 3, i32 5} -!0 = !{!"branch_weights", i32 3, i32 5} - |