llvm-6502/test/CodeGen/X86/2008-05-12-tailmerge-5.ll
Bob Wilson 2c04dae715 Reimplement BranchFolding change to avoid tail merging for a 1 instruction
common tail, except when the OptimizeForSize function attribute is present.
Radar 7338114.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85441 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28 22:10:20 +00:00

146 lines
6.2 KiB
LLVM

; RUN: llc < %s | grep abort | count 1
; Calls to abort should all be merged
; ModuleID = '5898899.c'
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
target triple = "x86_64-apple-darwin8"
%struct.BoundaryAlignment = type { [3 x i8], i8, i16, i16, i8, [2 x i8] }
define void @passing2(i64 %str.0, i64 %str.1, i16 signext %s, i32 %j, i8 signext %c, i16 signext %t, i16 signext %u, i8 signext %d) nounwind optsize {
entry:
%str_addr = alloca %struct.BoundaryAlignment ; <%struct.BoundaryAlignment*> [#uses=7]
%s_addr = alloca i16 ; <i16*> [#uses=1]
%j_addr = alloca i32 ; <i32*> [#uses=2]
%c_addr = alloca i8 ; <i8*> [#uses=2]
%t_addr = alloca i16 ; <i16*> [#uses=2]
%u_addr = alloca i16 ; <i16*> [#uses=2]
%d_addr = alloca i8 ; <i8*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
%tmp = bitcast %struct.BoundaryAlignment* %str_addr to { i64, i64 }* ; <{ i64, i64 }*> [#uses=1]
%tmp1 = getelementptr { i64, i64 }* %tmp, i32 0, i32 0 ; <i64*> [#uses=1]
store i64 %str.0, i64* %tmp1
%tmp2 = bitcast %struct.BoundaryAlignment* %str_addr to { i64, i64 }* ; <{ i64, i64 }*> [#uses=1]
%tmp3 = getelementptr { i64, i64 }* %tmp2, i32 0, i32 1 ; <i64*> [#uses=1]
%bc = bitcast i64* %tmp3 to i8* ; <i8*> [#uses=2]
%byte = trunc i64 %str.1 to i8 ; <i8> [#uses=1]
store i8 %byte, i8* %bc
%shft = lshr i64 %str.1, 8 ; <i64> [#uses=2]
%Loc = getelementptr i8* %bc, i32 1 ; <i8*> [#uses=2]
%byte4 = trunc i64 %shft to i8 ; <i8> [#uses=1]
store i8 %byte4, i8* %Loc
%shft5 = lshr i64 %shft, 8 ; <i64> [#uses=2]
%Loc6 = getelementptr i8* %Loc, i32 1 ; <i8*> [#uses=2]
%byte7 = trunc i64 %shft5 to i8 ; <i8> [#uses=1]
store i8 %byte7, i8* %Loc6
%shft8 = lshr i64 %shft5, 8 ; <i64> [#uses=2]
%Loc9 = getelementptr i8* %Loc6, i32 1 ; <i8*> [#uses=2]
%byte10 = trunc i64 %shft8 to i8 ; <i8> [#uses=1]
store i8 %byte10, i8* %Loc9
%shft11 = lshr i64 %shft8, 8 ; <i64> [#uses=0]
%Loc12 = getelementptr i8* %Loc9, i32 1 ; <i8*> [#uses=0]
store i16 %s, i16* %s_addr
store i32 %j, i32* %j_addr
store i8 %c, i8* %c_addr
store i16 %t, i16* %t_addr
store i16 %u, i16* %u_addr
store i8 %d, i8* %d_addr
%tmp13 = getelementptr %struct.BoundaryAlignment* %str_addr, i32 0, i32 0 ; <[3 x i8]*> [#uses=1]
%tmp1314 = bitcast [3 x i8]* %tmp13 to i32* ; <i32*> [#uses=1]
%tmp15 = load i32* %tmp1314, align 4 ; <i32> [#uses=1]
%tmp16 = shl i32 %tmp15, 14 ; <i32> [#uses=1]
%tmp17 = ashr i32 %tmp16, 23 ; <i32> [#uses=1]
%tmp1718 = trunc i32 %tmp17 to i16 ; <i16> [#uses=1]
%sextl = shl i16 %tmp1718, 7 ; <i16> [#uses=1]
%sextr = ashr i16 %sextl, 7 ; <i16> [#uses=2]
%sextl19 = shl i16 %sextr, 7 ; <i16> [#uses=1]
%sextr20 = ashr i16 %sextl19, 7 ; <i16> [#uses=0]
%sextl21 = shl i16 %sextr, 7 ; <i16> [#uses=1]
%sextr22 = ashr i16 %sextl21, 7 ; <i16> [#uses=1]
%sextr2223 = sext i16 %sextr22 to i32 ; <i32> [#uses=1]
%tmp24 = load i32* %j_addr, align 4 ; <i32> [#uses=1]
%tmp25 = icmp ne i32 %sextr2223, %tmp24 ; <i1> [#uses=1]
%tmp2526 = zext i1 %tmp25 to i8 ; <i8> [#uses=1]
%toBool = icmp ne i8 %tmp2526, 0 ; <i1> [#uses=1]
br i1 %toBool, label %bb, label %bb27
bb: ; preds = %entry
call void (...)* @abort( ) noreturn nounwind
unreachable
bb27: ; preds = %entry
%tmp28 = getelementptr %struct.BoundaryAlignment* %str_addr, i32 0, i32 1 ; <i8*> [#uses=1]
%tmp29 = load i8* %tmp28, align 4 ; <i8> [#uses=1]
%tmp30 = load i8* %c_addr, align 1 ; <i8> [#uses=1]
%tmp31 = icmp ne i8 %tmp29, %tmp30 ; <i1> [#uses=1]
%tmp3132 = zext i1 %tmp31 to i8 ; <i8> [#uses=1]
%toBool33 = icmp ne i8 %tmp3132, 0 ; <i1> [#uses=1]
br i1 %toBool33, label %bb34, label %bb35
bb34: ; preds = %bb27
call void (...)* @abort( ) noreturn nounwind
unreachable
bb35: ; preds = %bb27
%tmp36 = getelementptr %struct.BoundaryAlignment* %str_addr, i32 0, i32 2 ; <i16*> [#uses=1]
%tmp37 = load i16* %tmp36, align 4 ; <i16> [#uses=1]
%tmp38 = shl i16 %tmp37, 7 ; <i16> [#uses=1]
%tmp39 = ashr i16 %tmp38, 7 ; <i16> [#uses=1]
%sextl40 = shl i16 %tmp39, 7 ; <i16> [#uses=1]
%sextr41 = ashr i16 %sextl40, 7 ; <i16> [#uses=2]
%sextl42 = shl i16 %sextr41, 7 ; <i16> [#uses=1]
%sextr43 = ashr i16 %sextl42, 7 ; <i16> [#uses=0]
%sextl44 = shl i16 %sextr41, 7 ; <i16> [#uses=1]
%sextr45 = ashr i16 %sextl44, 7 ; <i16> [#uses=1]
%tmp46 = load i16* %t_addr, align 2 ; <i16> [#uses=1]
%tmp47 = icmp ne i16 %sextr45, %tmp46 ; <i1> [#uses=1]
%tmp4748 = zext i1 %tmp47 to i8 ; <i8> [#uses=1]
%toBool49 = icmp ne i8 %tmp4748, 0 ; <i1> [#uses=1]
br i1 %toBool49, label %bb50, label %bb51
bb50: ; preds = %bb35
call void (...)* @abort( ) noreturn nounwind
unreachable
bb51: ; preds = %bb35
%tmp52 = getelementptr %struct.BoundaryAlignment* %str_addr, i32 0, i32 3 ; <i16*> [#uses=1]
%tmp53 = load i16* %tmp52, align 4 ; <i16> [#uses=1]
%tmp54 = shl i16 %tmp53, 7 ; <i16> [#uses=1]
%tmp55 = ashr i16 %tmp54, 7 ; <i16> [#uses=1]
%sextl56 = shl i16 %tmp55, 7 ; <i16> [#uses=1]
%sextr57 = ashr i16 %sextl56, 7 ; <i16> [#uses=2]
%sextl58 = shl i16 %sextr57, 7 ; <i16> [#uses=1]
%sextr59 = ashr i16 %sextl58, 7 ; <i16> [#uses=0]
%sextl60 = shl i16 %sextr57, 7 ; <i16> [#uses=1]
%sextr61 = ashr i16 %sextl60, 7 ; <i16> [#uses=1]
%tmp62 = load i16* %u_addr, align 2 ; <i16> [#uses=1]
%tmp63 = icmp ne i16 %sextr61, %tmp62 ; <i1> [#uses=1]
%tmp6364 = zext i1 %tmp63 to i8 ; <i8> [#uses=1]
%toBool65 = icmp ne i8 %tmp6364, 0 ; <i1> [#uses=1]
br i1 %toBool65, label %bb66, label %bb67
bb66: ; preds = %bb51
call void (...)* @abort( ) noreturn nounwind
unreachable
bb67: ; preds = %bb51
%tmp68 = getelementptr %struct.BoundaryAlignment* %str_addr, i32 0, i32 4 ; <i8*> [#uses=1]
%tmp69 = load i8* %tmp68, align 4 ; <i8> [#uses=1]
%tmp70 = load i8* %d_addr, align 1 ; <i8> [#uses=1]
%tmp71 = icmp ne i8 %tmp69, %tmp70 ; <i1> [#uses=1]
%tmp7172 = zext i1 %tmp71 to i8 ; <i8> [#uses=1]
%toBool73 = icmp ne i8 %tmp7172, 0 ; <i1> [#uses=1]
br i1 %toBool73, label %bb74, label %bb75
bb74: ; preds = %bb67
call void (...)* @abort( ) noreturn nounwind
unreachable
bb75: ; preds = %bb67
br label %return
return: ; preds = %bb75
ret void
}
declare void @abort(...) noreturn nounwind