| ; RUN: llc < %s | FileCheck %s |
| ; RUN: llc < %s -enable-tail-merge=0 | FileCheck --check-prefix=NOMERGE %s |
| |
| ; Check that tail merging is the default on ARM, and that -enable-tail-merge=0 |
| ; works. |
| ; PR1628 |
| |
| ; CHECK: bl _baz |
| ; CHECK-NOT: bl _baz |
| |
| ; CHECK: bl _quux |
| ; CHECK-NOT: bl _quux |
| |
| ; NOMERGE-DAG: bl _baz |
| ; NOMERGE-DAG: bl _baz |
| |
| ; NOMERGE-DAG: bl _quux |
| ; NOMERGE-DAG: bl _quux |
| |
| ; ModuleID = 'tail.c' |
| target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64" |
| target triple = "arm-apple-darwin8" |
| |
| define i32 @f(i32 %i, i32 %q) { |
| entry: |
| %i_addr = alloca i32 ; <ptr> [#uses=2] |
| %q_addr = alloca i32 ; <ptr> [#uses=2] |
| %retval = alloca i32, align 4 ; <ptr> [#uses=1] |
| store i32 %i, ptr %i_addr |
| store i32 %q, ptr %q_addr |
| %tmp = load i32, ptr %i_addr ; <i32> [#uses=1] |
| %tmp1 = icmp ne i32 %tmp, 0 ; <i1> [#uses=1] |
| %tmp12 = zext i1 %tmp1 to i8 ; <i8> [#uses=1] |
| %toBool = icmp ne i8 %tmp12, 0 ; <i1> [#uses=1] |
| br i1 %toBool, label %cond_true, label %cond_false |
| |
| cond_true: ; preds = %entry |
| %tmp3 = call i32 (...) @bar( ) ; <i32> [#uses=0] |
| %tmp4 = call i32 (...) @baz( i32 5, i32 6 ) ; <i32> [#uses=0] |
| %tmp7 = load i32, ptr %q_addr ; <i32> [#uses=1] |
| %tmp8 = icmp ne i32 %tmp7, 0 ; <i1> [#uses=1] |
| %tmp89 = zext i1 %tmp8 to i8 ; <i8> [#uses=1] |
| %toBool10 = icmp ne i8 %tmp89, 0 ; <i1> [#uses=1] |
| br i1 %toBool10, label %cond_true11, label %cond_false15 |
| |
| cond_false: ; preds = %entry |
| %tmp5 = call i32 (...) @foo( ) ; <i32> [#uses=0] |
| %tmp6 = call i32 (...) @baz( i32 5, i32 6 ) ; <i32> [#uses=0] |
| %tmp27 = load i32, ptr %q_addr ; <i32> [#uses=1] |
| %tmp28 = icmp ne i32 %tmp27, 0 ; <i1> [#uses=1] |
| %tmp289 = zext i1 %tmp28 to i8 ; <i8> [#uses=1] |
| %toBool210 = icmp ne i8 %tmp289, 0 ; <i1> [#uses=1] |
| br i1 %toBool210, label %cond_true11, label %cond_false15 |
| |
| cond_true11: ; preds = %cond_next |
| %tmp13 = call i32 (...) @foo( ) ; <i32> [#uses=0] |
| %tmp14 = call i32 (...) @quux( i32 3, i32 4 ) ; <i32> [#uses=0] |
| br label %cond_next18 |
| |
| cond_false15: ; preds = %cond_next |
| %tmp16 = call i32 (...) @bar( ) ; <i32> [#uses=0] |
| %tmp17 = call i32 (...) @quux( i32 3, i32 4 ) ; <i32> [#uses=0] |
| br label %cond_next18 |
| |
| cond_next18: ; preds = %cond_false15, %cond_true11 |
| %tmp19 = call i32 (...) @bar( ) ; <i32> [#uses=0] |
| br label %return |
| |
| return: ; preds = %cond_next18 |
| %retval20 = load i32, ptr %retval ; <i32> [#uses=1] |
| ret i32 %retval20 |
| } |
| |
| declare i32 @bar(...) |
| |
| declare i32 @baz(...) |
| |
| declare i32 @foo(...) |
| |
| declare i32 @quux(...) |