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; 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(...)
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