diff options
Diffstat (limited to 'test/Transforms/FunctionAttrs/nocapture.ll')
| -rw-r--r-- | test/Transforms/FunctionAttrs/nocapture.ll | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/test/Transforms/FunctionAttrs/nocapture.ll b/test/Transforms/FunctionAttrs/nocapture.ll new file mode 100644 index 0000000..3027acd --- /dev/null +++ b/test/Transforms/FunctionAttrs/nocapture.ll @@ -0,0 +1,178 @@ +; RUN: opt < %s -functionattrs -S | FileCheck %s +@g = global i32* null ; <i32**> [#uses=1] + +; CHECK: define i32* @c1(i32* %q) +define i32* @c1(i32* %q) { + ret i32* %q +} + +; CHECK: define void @c2(i32* %q) +define void @c2(i32* %q) { + store i32* %q, i32** @g + ret void +} + +; CHECK: define void @c3(i32* %q) +define void @c3(i32* %q) { + call void @c2(i32* %q) + ret void +} + +; CHECK: define i1 @c4(i32* %q, i32 %bitno) +define i1 @c4(i32* %q, i32 %bitno) { + %tmp = ptrtoint i32* %q to i32 + %tmp2 = lshr i32 %tmp, %bitno + %bit = trunc i32 %tmp2 to i1 + br i1 %bit, label %l1, label %l0 +l0: + ret i1 0 ; escaping value not caught by def-use chaining. +l1: + ret i1 1 ; escaping value not caught by def-use chaining. +} + +@lookup_table = global [2 x i1] [ i1 0, i1 1 ] + +; CHECK: define i1 @c5(i32* %q, i32 %bitno) +define i1 @c5(i32* %q, i32 %bitno) { + %tmp = ptrtoint i32* %q to i32 + %tmp2 = lshr i32 %tmp, %bitno + %bit = and i32 %tmp2, 1 + ; subtle escape mechanism follows + %lookup = getelementptr [2 x i1]* @lookup_table, i32 0, i32 %bit + %val = load i1* %lookup + ret i1 %val +} + +declare void @throw_if_bit_set(i8*, i8) readonly + +; CHECK: define i1 @c6(i8* %q, i8 %bit) +define i1 @c6(i8* %q, i8 %bit) { + invoke void @throw_if_bit_set(i8* %q, i8 %bit) + to label %ret0 unwind label %ret1 +ret0: + ret i1 0 +ret1: + %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 + cleanup + ret i1 1 +} + +declare i32 @__gxx_personality_v0(...) + +define i1* @lookup_bit(i32* %q, i32 %bitno) readnone nounwind { + %tmp = ptrtoint i32* %q to i32 + %tmp2 = lshr i32 %tmp, %bitno + %bit = and i32 %tmp2, 1 + %lookup = getelementptr [2 x i1]* @lookup_table, i32 0, i32 %bit + ret i1* %lookup +} + +; CHECK: define i1 @c7(i32* %q, i32 %bitno) +define i1 @c7(i32* %q, i32 %bitno) { + %ptr = call i1* @lookup_bit(i32* %q, i32 %bitno) + %val = load i1* %ptr + ret i1 %val +} + + +; CHECK: define i32 @nc1(i32* %q, i32* nocapture %p, i1 %b) +define i32 @nc1(i32* %q, i32* %p, i1 %b) { +e: + br label %l +l: + %x = phi i32* [ %p, %e ] + %y = phi i32* [ %q, %e ] + %tmp = bitcast i32* %x to i32* ; <i32*> [#uses=2] + %tmp2 = select i1 %b, i32* %tmp, i32* %y + %val = load i32* %tmp2 ; <i32> [#uses=1] + store i32 0, i32* %tmp + store i32* %y, i32** @g + ret i32 %val +} + +; CHECK: define void @nc2(i32* nocapture %p, i32* %q) +define void @nc2(i32* %p, i32* %q) { + %1 = call i32 @nc1(i32* %q, i32* %p, i1 0) ; <i32> [#uses=0] + ret void +} + +; CHECK: define void @nc3(void ()* nocapture %p) +define void @nc3(void ()* %p) { + call void %p() + ret void +} + +declare void @external(i8*) readonly nounwind +; CHECK: define void @nc4(i8* nocapture %p) +define void @nc4(i8* %p) { + call void @external(i8* %p) + ret void +} + +; CHECK: define void @nc5(void (i8*)* nocapture %f, i8* nocapture %p) +define void @nc5(void (i8*)* %f, i8* %p) { + call void %f(i8* %p) readonly nounwind + call void %f(i8* nocapture %p) + ret void +} + +; CHECK: define void @test1_1(i8* nocapture %x1_1, i8* %y1_1) +define void @test1_1(i8* %x1_1, i8* %y1_1) { + call i8* @test1_2(i8* %x1_1, i8* %y1_1) + store i32* null, i32** @g + ret void +} + +; CHECK: define i8* @test1_2(i8* nocapture %x1_2, i8* %y1_2) +define i8* @test1_2(i8* %x1_2, i8* %y1_2) { + call void @test1_1(i8* %x1_2, i8* %y1_2) + store i32* null, i32** @g + ret i8* %y1_2 +} + +; CHECK: define void @test2(i8* nocapture %x2) +define void @test2(i8* %x2) { + call void @test2(i8* %x2) + store i32* null, i32** @g + ret void +} + +; CHECK: define void @test3(i8* nocapture %x3, i8* nocapture %y3, i8* nocapture %z3) +define void @test3(i8* %x3, i8* %y3, i8* %z3) { + call void @test3(i8* %z3, i8* %y3, i8* %x3) + store i32* null, i32** @g + ret void +} + +; CHECK: define void @test4_1(i8* %x4_1) +define void @test4_1(i8* %x4_1) { + call i8* @test4_2(i8* %x4_1, i8* %x4_1, i8* %x4_1) + store i32* null, i32** @g + ret void +} + +; CHECK: define i8* @test4_2(i8* nocapture %x4_2, i8* %y4_2, i8* nocapture %z4_2) +define i8* @test4_2(i8* %x4_2, i8* %y4_2, i8* %z4_2) { + call void @test4_1(i8* null) + store i32* null, i32** @g + ret i8* %y4_2 +} + +declare i8* @test5_1(i8* %x5_1) + +; CHECK: define void @test5_2(i8* %x5_2) +define void @test5_2(i8* %x5_2) { + call i8* @test5_1(i8* %x5_2) + store i32* null, i32** @g + ret void +} + +declare void @test6_1(i8* %x6_1, i8* nocapture %y6_1, ...) + +; CHECK: define void @test6_2(i8* %x6_2, i8* nocapture %y6_2, i8* %z6_2) +define void @test6_2(i8* %x6_2, i8* %y6_2, i8* %z6_2) { + call void (i8*, i8*, ...)* @test6_1(i8* %x6_2, i8* %y6_2, i8* %z6_2) + store i32* null, i32** @g + ret void +} + |
