; RUN: llc < %s -enable-tail-merge | FileCheck %s ; Check that calls to baz and quux are tail-merged. ; PR1628 ; CHECK: bl _baz ; CHECK-NOT: bl _baz ; CHECK: bl _quux ; CHECK-NOT: bl _quux ; ModuleID = 'tail.c' target triple = "arm-apple-darwin8" define i32 @f(i32 %i, i32 %q) { entry: %i_addr = alloca i32 ; [#uses=2] %q_addr = alloca i32 ; [#uses=2] %retval = alloca i32, align 4 ; [#uses=1] store i32 %i, i32* %i_addr store i32 %q, i32* %q_addr %tmp = load i32, i32* %i_addr ; [#uses=1] %tmp1 = icmp ne i32 %tmp, 0 ; [#uses=1] %tmp12 = zext i1 %tmp1 to i8 ; [#uses=1] %toBool = icmp ne i8 %tmp12, 0 ; [#uses=1] br i1 %toBool, label %cond_true, label %cond_false cond_true: ; preds = %entry %tmp3 = call i32 (...) @bar( ) ; [#uses=0] %tmp4 = call i32 (...) @baz( i32 5, i32 6 ) ; [#uses=0] br label %cond_next cond_false: ; preds = %entry %tmp5 = call i32 (...) @foo( ) ; [#uses=0] %tmp6 = call i32 (...) @baz( i32 5, i32 6 ) ; [#uses=0] br label %cond_next cond_next: ; preds = %cond_false, %cond_true %tmp7 = load i32, i32* %q_addr ; [#uses=1] %tmp8 = icmp ne i32 %tmp7, 0 ; [#uses=1] %tmp89 = zext i1 %tmp8 to i8 ; [#uses=1] %toBool10 = icmp ne i8 %tmp89, 0 ; [#uses=1] br i1 %toBool10, label %cond_true11, label %cond_false15 cond_true11: ; preds = %cond_next %tmp13 = call i32 (...) @foo( ) ; [#uses=0] %tmp14 = call i32 (...) @quux( i32 3, i32 4 ) ; [#uses=0] br label %cond_next18 cond_false15: ; preds = %cond_next %tmp16 = call i32 (...) @bar( ) ; [#uses=0] %tmp17 = call i32 (...) @quux( i32 3, i32 4 ) ; [#uses=0] br label %cond_next18 cond_next18: ; preds = %cond_false15, %cond_true11 %tmp19 = call i32 (...) @bar( ) ; [#uses=0] br label %return return: ; preds = %cond_next18 %retval20 = load i32, i32* %retval ; [#uses=1] ret i32 %retval20 } declare i32 @bar(...) declare i32 @baz(...) declare i32 @foo(...) declare i32 @quux(...)