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Diffstat (limited to 'llvm/test/Transforms/Inline/noinline-recursive-fn.ll')
-rw-r--r-- | llvm/test/Transforms/Inline/noinline-recursive-fn.ll | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/llvm/test/Transforms/Inline/noinline-recursive-fn.ll b/llvm/test/Transforms/Inline/noinline-recursive-fn.ll deleted file mode 100644 index 2b1851bd46b..00000000000 --- a/llvm/test/Transforms/Inline/noinline-recursive-fn.ll +++ /dev/null @@ -1,111 +0,0 @@ -; The inliner should never inline recursive functions into other functions. -; This effectively is just peeling off the first iteration of a loop, and the -; inliner heuristics are not set up for this. - -; RUN: opt -inline -S < %s | FileCheck %s -; RUN: opt -passes='cgscc(inline)' -S < %s | FileCheck %s - -target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" -target triple = "x86_64-apple-darwin10.3" - -@g = common global i32 0 ; <i32*> [#uses=1] - -define internal void @foo(i32 %x) nounwind ssp { -entry: - %0 = icmp slt i32 %x, 0 ; <i1> [#uses=1] - br i1 %0, label %return, label %bb - -bb: ; preds = %entry - %1 = sub nsw i32 %x, 1 ; <i32> [#uses=1] - call void @foo(i32 %1) nounwind ssp - store volatile i32 1, i32* @g, align 4 - ret void - -return: ; preds = %entry - ret void -} - - -;; CHECK-LABEL: @bonk( -;; CHECK: call void @foo(i32 42) -define void @bonk() nounwind ssp { -entry: - call void @foo(i32 42) nounwind ssp - ret void -} - - - -;; Here is an indirect case that should not be infinitely inlined. - -define internal void @f1(i32 %x, i8* %Foo, i8* %Bar) nounwind ssp { -entry: - %0 = bitcast i8* %Bar to void (i32, i8*, i8*)* - %1 = sub nsw i32 %x, 1 - call void %0(i32 %1, i8* %Foo, i8* %Bar) nounwind - store volatile i32 42, i32* @g, align 4 - ret void -} - -define internal void @f2(i32 %x, i8* %Foo, i8* %Bar) nounwind ssp { -entry: - %0 = icmp slt i32 %x, 0 ; <i1> [#uses=1] - br i1 %0, label %return, label %bb - -bb: ; preds = %entry - %1 = bitcast i8* %Foo to void (i32, i8*, i8*)* ; <void (i32, i8*, i8*)*> [#uses=1] - call void %1(i32 %x, i8* %Foo, i8* %Bar) nounwind - store volatile i32 13, i32* @g, align 4 - ret void - -return: ; preds = %entry - ret void -} - - -; CHECK-LABEL: @top_level( -; CHECK: call void @f2(i32 122 -; Here we inline one instance of the cycle, but we don't want to completely -; unroll it. -define void @top_level() nounwind ssp { -entry: - call void @f2(i32 123, i8* bitcast (void (i32, i8*, i8*)* @f1 to i8*), i8* bitcast (void (i32, i8*, i8*)* @f2 to i8*)) nounwind ssp - ret void -} - - -; Check that a recursive function, when called with a constant that makes the -; recursive path dead code can actually be inlined. -define i32 @fib(i32 %i) { -entry: - %is.zero = icmp eq i32 %i, 0 - br i1 %is.zero, label %zero.then, label %zero.else - -zero.then: - ret i32 0 - -zero.else: - %is.one = icmp eq i32 %i, 1 - br i1 %is.one, label %one.then, label %one.else - -one.then: - ret i32 1 - -one.else: - %i1 = sub i32 %i, 1 - %f1 = call i32 @fib(i32 %i1) - %i2 = sub i32 %i, 2 - %f2 = call i32 @fib(i32 %i2) - %f = add i32 %f1, %f2 - ret i32 %f -} - -define i32 @fib_caller() { -; CHECK-LABEL: @fib_caller( -; CHECK-NOT: call -; CHECK: ret - %f1 = call i32 @fib(i32 0) - %f2 = call i32 @fib(i32 1) - %result = add i32 %f1, %f2 - ret i32 %result -} |