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 %tmp7 = load i32* %q_addr ; <i32> [#uses=1] 27 %tmp8 = icmp ne i32 %tmp7, 0 ; <i1> [#uses=1] 28 %tmp89 = zext i1 %tmp8 to i8 ; <i8> [#uses=1] 29 %toBool10 = icmp ne i8 %tmp89, 0 ; <i1> [#uses=1] 30 br i1 %toBool10, label %cond_true11, label %cond_false15 31 32 cond_false: ; preds = %entry 33 %tmp5 = call i32 (...)* @foo( ) ; <i32> [#uses=0] 34 %tmp6 = call i32 (...)* @baz( i32 5, i32 6 ) ; <i32> [#uses=0] 35 %tmp27 = load i32* %q_addr ; <i32> [#uses=1] 36 %tmp28 = icmp ne i32 %tmp27, 0 ; <i1> [#uses=1] 37 %tmp289 = zext i1 %tmp28 to i8 ; <i8> [#uses=1] 38 %toBool210 = icmp ne i8 %tmp289, 0 ; <i1> [#uses=1] 39 br i1 %toBool210, label %cond_true11, label %cond_false15 40 41 cond_true11: ; preds = %cond_next 42 %tmp13 = call i32 (...)* @foo( ) ; <i32> [#uses=0] 43 %tmp14 = call i32 (...)* @quux( i32 3, i32 4 ) ; <i32> [#uses=0] 44 br label %cond_next18 45 46 cond_false15: ; preds = %cond_next 47 %tmp16 = call i32 (...)* @bar( ) ; <i32> [#uses=0] 48 %tmp17 = call i32 (...)* @quux( i32 3, i32 4 ) ; <i32> [#uses=0] 49 br label %cond_next18 50 51 cond_next18: ; preds = %cond_false15, %cond_true11 52 %tmp19 = call i32 (...)* @bar( ) ; <i32> [#uses=0] 53 br label %return 54 55 return: ; preds = %cond_next18 56 %retval20 = load i32* %retval ; <i32> [#uses=1] 57 ret i32 %retval20 58 } 59 60 declare i32 @bar(...) 61 62 declare i32 @baz(...) 63 64 declare i32 @foo(...) 65 66 declare i32 @quux(...) 67
