diff options
Diffstat (limited to 'llvm/test/Transforms/TailCallElim/accum_recursion.ll')
-rw-r--r-- | llvm/test/Transforms/TailCallElim/accum_recursion.ll | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/llvm/test/Transforms/TailCallElim/accum_recursion.ll b/llvm/test/Transforms/TailCallElim/accum_recursion.ll deleted file mode 100644 index d56a1c2a7d3..00000000000 --- a/llvm/test/Transforms/TailCallElim/accum_recursion.ll +++ /dev/null @@ -1,75 +0,0 @@ -; RUN: opt < %s -tailcallelim -verify-dom-info -S | FileCheck %s -; RUN: opt < %s -passes=tailcallelim -verify-dom-info -S | FileCheck %s - -define i32 @test1_factorial(i32 %x) { -entry: - %tmp.1 = icmp sgt i32 %x, 0 ; <i1> [#uses=1] - br i1 %tmp.1, label %then, label %else -then: ; preds = %entry - %tmp.6 = add i32 %x, -1 ; <i32> [#uses=1] - %tmp.4 = call i32 @test1_factorial( i32 %tmp.6 ) ; <i32> [#uses=1] - %tmp.7 = mul i32 %tmp.4, %x ; <i32> [#uses=1] - ret i32 %tmp.7 -else: ; preds = %entry - ret i32 1 -} - -; CHECK-LABEL: define i32 @test1_factorial( -; CHECK: phi i32 -; CHECK-NOT: call i32 -; CHECK: else: - -; This is a more aggressive form of accumulator recursion insertion, which -; requires noticing that X doesn't change as we perform the tailcall. - -define i32 @test2_mul(i32 %x, i32 %y) { -entry: - %tmp.1 = icmp eq i32 %y, 0 ; <i1> [#uses=1] - br i1 %tmp.1, label %return, label %endif -endif: ; preds = %entry - %tmp.8 = add i32 %y, -1 ; <i32> [#uses=1] - %tmp.5 = call i32 @test2_mul( i32 %x, i32 %tmp.8 ) ; <i32> [#uses=1] - %tmp.9 = add i32 %tmp.5, %x ; <i32> [#uses=1] - ret i32 %tmp.9 -return: ; preds = %entry - ret i32 %x -} - -; CHECK-LABEL: define i32 @test2_mul( -; CHECK: phi i32 -; CHECK-NOT: call i32 -; CHECK: return: - - -define i64 @test3_fib(i64 %n) nounwind readnone { -; CHECK-LABEL: @test3_fib( -entry: -; CHECK: tailrecurse: -; CHECK: %accumulator.tr = phi i64 [ %n, %entry ], [ %3, %bb1 ] -; CHECK: %n.tr = phi i64 [ %n, %entry ], [ %2, %bb1 ] - switch i64 %n, label %bb1 [ -; CHECK: switch i64 %n.tr, label %bb1 [ - i64 0, label %bb2 - i64 1, label %bb2 - ] - -bb1: -; CHECK: bb1: - %0 = add i64 %n, -1 -; CHECK: %0 = add i64 %n.tr, -1 - %1 = tail call i64 @test3_fib(i64 %0) nounwind -; CHECK: %1 = tail call i64 @test3_fib(i64 %0) - %2 = add i64 %n, -2 -; CHECK: %2 = add i64 %n.tr, -2 - %3 = tail call i64 @test3_fib(i64 %2) nounwind -; CHECK-NOT: tail call i64 @test3_fib - %4 = add nsw i64 %3, %1 -; CHECK: add nsw i64 %accumulator.tr, %1 - ret i64 %4 -; CHECK: br label %tailrecurse - -bb2: -; CHECK: bb2: - ret i64 %n -; CHECK: ret i64 %accumulator.tr -} |