1 ; RUN: llc < %s -march=arm -enable-tail-merge | grep bl.*baz | count 1 2 ; RUN: llc < %s -march=arm -enable-tail-merge | grep bl.*quux | count 1 3 ; Check that calls to baz and quux are tail-merged. 4 ; PR1628 5 6 ; ModuleID = 'tail.c' 7 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" 8 target triple = "i686-apple-darwin8" 9 10 define i32 @f(i32 %i, i32 %q) { 11 entry: 12 %i_addr = alloca i32 ; <i32*> [#uses=2] 13 %q_addr = alloca i32 ; <i32*> [#uses=2] 14 %retval = alloca i32, align 4 ; <i32*> [#uses=1] 15 store i32 %i, i32* %i_addr 16 store i32 %q, i32* %q_addr 17 %tmp = load i32* %i_addr ; <i32> [#uses=1] 18 %tmp1 = icmp ne i32 %tmp, 0 ; <i1> [#uses=1] 19 %tmp12 = zext i1 %tmp1 to i8 ; <i8> [#uses=1] 20 %toBool = icmp ne i8 %tmp12, 0 ; <i1> [#uses=1] 21 br i1 %toBool, label %cond_true, label %cond_false 22 23 cond_true: ; preds = %entry 24 %tmp3 = call i32 (...)* @bar( ) ; <i32> [#uses=0] 25 %tmp4 = call i32 (...)* @baz( i32 5, i32 6 ) ; <i32> [#uses=0] 26 br label %cond_next 27 28 cond_false: ; preds = %entry 29 %tmp5 = call i32 (...)* @foo( ) ; <i32> [#uses=0] 30 %tmp6 = call i32 (...)* @baz( i32 5, i32 6 ) ; <i32> [#uses=0] 31 br label %cond_next 32 33 cond_next: ; preds = %cond_false, %cond_true 34 %tmp7 = load i32* %q_addr ; <i32> [#uses=1] 35 %tmp8 = icmp ne i32 %tmp7, 0 ; <i1> [#uses=1] 36 %tmp89 = zext i1 %tmp8 to i8 ; <i8> [#uses=1] 37 %toBool10 = icmp ne i8 %tmp89, 0 ; <i1> [#uses=1] 38 br i1 %toBool10, label %cond_true11, label %cond_false15 39 40 cond_true11: ; preds = %cond_next 41 %tmp13 = call i32 (...)* @foo( ) ; <i32> [#uses=0] 42 %tmp14 = call i32 (...)* @quux( i32 3, i32 4 ) ; <i32> [#uses=0] 43 br label %cond_next18 44 45 cond_false15: ; preds = %cond_next 46 %tmp16 = call i32 (...)* @bar( ) ; <i32> [#uses=0] 47 %tmp17 = call i32 (...)* @quux( i32 3, i32 4 ) ; <i32> [#uses=0] 48 br label %cond_next18 49 50 cond_next18: ; preds = %cond_false15, %cond_true11 51 %tmp19 = call i32 (...)* @bar( ) ; <i32> [#uses=0] 52 br label %return 53 54 return: ; preds = %cond_next18 55 %retval20 = load i32* %retval ; <i32> [#uses=1] 56 ret i32 %retval20 57 } 58 59 declare i32 @bar(...) 60 61 declare i32 @baz(...) 62 63 declare i32 @foo(...) 64 65 declare i32 @quux(...) 66
