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| author | David Majnemer <david.majnemer@gmail.com> | 2013-11-03 12:22:13 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2013-11-03 12:22:13 +0000 |
| commit | 16d10987184281aff35c80542a3c02e7dcb7b59b (patch) | |
| tree | feb885ab8cbaf6717113d61bdb05f44a6f38dfef /test | |
| parent | 42864070b016976b87c64830395e96ae0e49279c (diff) | |
| download | llvm-16d10987184281aff35c80542a3c02e7dcb7b59b.tar.gz llvm-16d10987184281aff35c80542a3c02e7dcb7b59b.tar.bz2 llvm-16d10987184281aff35c80542a3c02e7dcb7b59b.tar.xz | |
Revert "Inliner: Handle readonly attribute per argument when adding memcpy"
This reverts commit r193356, it caused PR17781.
A reduced test case covering this regression has been added to the test suite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193955 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/Inline/byval.ll | 44 |
1 files changed, 21 insertions, 23 deletions
diff --git a/test/Transforms/Inline/byval.ll b/test/Transforms/Inline/byval.ll index 3d41dc5a79..d7597adaf8 100644 --- a/test/Transforms/Inline/byval.ll +++ b/test/Transforms/Inline/byval.ll @@ -25,7 +25,7 @@ entry: store i64 2, i64* %tmp4, align 4 call void @f( %struct.ss* byval %S ) nounwind ret i32 0 -; CHECK-LABEL: @test1() +; CHECK: @test1() ; CHECK: %S1 = alloca %struct.ss ; CHECK: %S = alloca %struct.ss ; CHECK: call void @llvm.memcpy @@ -52,7 +52,7 @@ entry: store i64 2, i64* %tmp4, align 4 %X = call i32 @f2( %struct.ss* byval %S ) nounwind ret i32 %X -; CHECK-LABEL: @test2() +; CHECK: @test2() ; CHECK: %S = alloca %struct.ss ; CHECK-NOT: call void @llvm.memcpy ; CHECK: ret i32 @@ -74,7 +74,7 @@ entry: %S = alloca %struct.ss, align 1 ;; May not be aligned. call void @f3( %struct.ss* byval align 64 %S) nounwind ret void -; CHECK-LABEL: @test3() +; CHECK: @test3() ; CHECK: %S1 = alloca %struct.ss, align 64 ; CHECK: %S = alloca %struct.ss ; CHECK: call void @llvm.memcpy @@ -97,35 +97,33 @@ entry: %S = alloca %struct.ss, align 2 ; <%struct.ss*> [#uses=4] %X = call i32 @f4( %struct.ss* byval align 64 %S ) nounwind ret i32 %X -; CHECK-LABEL: @test4() +; CHECK: @test4() ; CHECK: %S = alloca %struct.ss, align 64 ; CHECK-NOT: call void @llvm.memcpy ; CHECK: call void @g3 ; CHECK: ret i32 4 } -; Inlining a byval struct should NOT cause an explicit copy -; into an alloca if the parameter is readonly +%struct.S0 = type { i32 } -define internal i32 @f5(%struct.ss* byval readonly %b) nounwind { +@b = global %struct.S0 { i32 1 }, align 4 +@a = common global i32 0, align 4 + +define internal void @f5(%struct.S0* byval nocapture readonly align 4 %p) { entry: - %tmp = getelementptr %struct.ss* %b, i32 0, i32 0 ; <i32*> [#uses=2] - %tmp1 = load i32* %tmp, align 4 ; <i32> [#uses=1] - %tmp2 = add i32 %tmp1, 1 ; <i32> [#uses=1] - ret i32 %tmp2 + store i32 0, i32* getelementptr inbounds (%struct.S0* @b, i64 0, i32 0), align 4 + %f2 = getelementptr inbounds %struct.S0* %p, i64 0, i32 0 + %0 = load i32* %f2, align 4 + store i32 %0, i32* @a, align 4 + ret void } -define i32 @test5() nounwind { +define i32 @test5() { entry: - %S = alloca %struct.ss ; <%struct.ss*> [#uses=4] - %tmp1 = getelementptr %struct.ss* %S, i32 0, i32 0 ; <i32*> [#uses=1] - store i32 1, i32* %tmp1, align 8 - %tmp4 = getelementptr %struct.ss* %S, i32 0, i32 1 ; <i64*> [#uses=1] - store i64 2, i64* %tmp4, align 4 - %X = call i32 @f5( %struct.ss* byval %S ) nounwind - ret i32 %X -; CHECK-LABEL: @test5() -; CHECK: %S = alloca %struct.ss -; CHECK-NOT: call void @llvm.memcpy -; CHECK: ret i32 + tail call void @f5(%struct.S0* byval align 4 @b) + %0 = load i32* @a, align 4 + ret i32 %0 +; CHECK: @test5() +; CHECK: store i32 0, i32* getelementptr inbounds (%struct.S0* @b, i64 0, i32 0), align 4 +; CHECK-NOT: load i32* getelementptr inbounds (%struct.S0* @b, i64 0, i32 0), align 4 } |