1 ; RUN: llc < %s -march=ppc32 -enable-tail-merge=0 | grep bl.*baz | count 2 2 ; RUN: llc < %s -march=ppc32 -enable-tail-merge=0 | grep bl.*quux | count 2 3 ; RUN: llc < %s -march=ppc32 | grep bl.*baz | count 1 4 ; RUN: llc < %s -march=ppc32 | grep bl.*quux | count 1 5 ; Check that tail merging is the default on ppc, and that -enable-tail-merge works. 6 7 ; ModuleID = 'tail.c' 8 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" 9 target triple = "i686-apple-darwin8" 10 11 define i32 @f(i32 %i, i32 %q) { 12 entry: 13 %i_addr = alloca i32 ; <i32*> [#uses=2] 14 %q_addr = alloca i32 ; <i32*> [#uses=2] 15 %retval = alloca i32, align 4 ; <i32*> [#uses=1] 16 store i32 %i, i32* %i_addr 17 store i32 %q, i32* %q_addr 18 %tmp = load i32* %i_addr ; <i32> [#uses=1] 19 %tmp1 = icmp ne i32 %tmp, 0 ; <i1> [#uses=1] 20 %tmp12 = zext i1 %tmp1 to i8 ; <i8> [#uses=1] 21 %toBool = icmp ne i8 %tmp12, 0 ; <i1> [#uses=1] 22 br i1 %toBool, label %cond_true, label %cond_false 23 24 cond_true: ; preds = %entry 25 %tmp3 = call i32 (...)* @bar( ) ; <i32> [#uses=0] 26 %tmp4 = call i32 (...)* @baz( i32 5, i32 6 ) ; <i32> [#uses=0] 27 %tmp7 = load i32* %q_addr ; <i32> [#uses=1] 28 %tmp8 = icmp ne i32 %tmp7, 0 ; <i1> [#uses=1] 29 %tmp89 = zext i1 %tmp8 to i8 ; <i8> [#uses=1] 30 %toBool10 = icmp ne i8 %tmp89, 0 ; <i1> [#uses=1] 31 br i1 %toBool10, label %cond_true11, label %cond_false15 32 33 cond_false: ; preds = %entry 34 %tmp5 = call i32 (...)* @foo( ) ; <i32> [#uses=0] 35 %tmp6 = call i32 (...)* @baz( i32 5, i32 6 ) ; <i32> [#uses=0] 36 %tmp27 = load i32* %q_addr ; <i32> [#uses=1] 37 %tmp28 = icmp ne i32 %tmp27, 0 ; <i1> [#uses=1] 38 %tmp289 = zext i1 %tmp28 to i8 ; <i8> [#uses=1] 39 %toBool210 = icmp ne i8 %tmp289, 0 ; <i1> [#uses=1] 40 br i1 %toBool210, label %cond_true11, label %cond_false15 41 42 cond_true11: ; preds = %cond_next 43 %tmp13 = call i32 (...)* @foo( ) ; <i32> [#uses=0] 44 %tmp14 = call i32 (...)* @quux( i32 3, i32 4 ) ; <i32> [#uses=0] 45 br label %cond_next18 46 47 cond_false15: ; preds = %cond_next 48 %tmp16 = call i32 (...)* @bar( ) ; <i32> [#uses=0] 49 %tmp17 = call i32 (...)* @quux( i32 3, i32 4 ) ; <i32> [#uses=0] 50 br label %cond_next18 51 52 cond_next18: ; preds = %cond_false15, %cond_true11 53 %tmp19 = call i32 (...)* @bar( ) ; <i32> [#uses=0] 54 br label %return 55 56 return: ; preds = %cond_next18 57 %retval20 = load i32* %retval ; <i32> [#uses=1] 58 ret i32 %retval20 59 } 60 61 declare i32 @bar(...) 62 63 declare i32 @baz(...) 64 65 declare i32 @foo(...) 66 67 declare i32 @quux(...) 68
