Really fix PR1734. Carefully track which register uses are sub-register uses by

traversing inverse register coalescing map.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43118 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 87 insertions, 0 deletions

diff --git a/test/CodeGen/X86/2007-10-17-IllegalAsm.ll b/test/CodeGen/X86/2007-10-17-IllegalAsm.ll
new file mode 100644
index 0000000..f3cdfee
--- /dev/null
+++ b/test/CodeGen/X86/2007-10-17-IllegalAsm.ll
@@ -0,0 +1,87 @@
+; RUN: llvm-as < %s | llc -mtriple=x86_64-linux-gnu | grep addb | not grep x
+; RUN: llvm-as < %s | llc -mtriple=x86_64-linux-gnu | grep cmpb | not grep x
+; PR1734
+
+target triple = "x86_64-unknown-linux-gnu"
+	%struct.CUMULATIVE_ARGS = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
+	%struct.eh_status = type opaque
+	%struct.emit_status = type { i32, i32, %struct.rtx_def*, %struct.rtx_def*, %struct.sequence_stack*, i32, %struct.location_t, i32, i8*, %struct.rtx_def** }
+	%struct.expr_status = type { i32, i32, i32, %struct.rtx_def*, %struct.rtx_def*, %struct.rtx_def* }
+	%struct.function = type { %struct.eh_status*, %struct.expr_status*, %struct.emit_status*, %struct.varasm_status*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.function*, i32, i32, i32, i32, %struct.rtx_def*, %struct.CUMULATIVE_ARGS, %struct.rtx_def*, %struct.rtx_def*, %struct.initial_value_struct*, %struct.rtx_def*, %struct.rtx_def*, %struct.rtx_def*, %struct.rtx_def*, %struct.rtx_def*, %struct.rtx_def*, i8, i32, i64, %struct.tree_node*, %struct.tree_node*, %struct.rtx_def*, %struct.varray_head_tag*, %struct.temp_slot*, i32, %struct.var_refs_queue*, i32, i32, %struct.rtvec_def*, %struct.tree_node*, i32, i32, i32, %struct.machine_function*, i32, i32, i8, i8, %struct.language_function*, %struct.rtx_def*, i32, i32, i32, i32, %struct.location_t, %struct.varray_head_tag*, %struct.tree_node*, %struct.tree_node*, i8, i8, i8 }
+	%struct.initial_value_struct = type opaque
+	%struct.lang_decl = type opaque
+	%struct.language_function = type opaque
+	%struct.location_t = type { i8*, i32 }
+	%struct.machine_function = type { %struct.stack_local_entry*, i8*, %struct.rtx_def*, i32, i32, i32, i32, i32 }
+	%struct.rtunion = type { i8* }
+	%struct.rtvec_def = type { i32, [1 x %struct.rtx_def*] }
+	%struct.rtx_def = type { i16, i8, i8, %struct.u }
+	%struct.sequence_stack = type { %struct.rtx_def*, %struct.rtx_def*, %struct.sequence_stack* }
+	%struct.stack_local_entry = type opaque
+	%struct.temp_slot = type opaque
+	%struct.tree_common = type { %struct.tree_node*, %struct.tree_node*, %union.tree_ann_d*, i8, i8, i8, i8, i8 }
+	%struct.tree_decl = type { %struct.tree_common, %struct.location_t, i32, %struct.tree_node*, i8, i8, i8, i8, i8, i8, i8, i8, i32, %struct.tree_decl_u1, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.tree_node*, %struct.rtx_def*, i32, %struct.tree_decl_u2, %struct.tree_node*, %struct.tree_node*, i64, %struct.lang_decl* }
+	%struct.tree_decl_u1 = type { i64 }
+	%struct.tree_decl_u2 = type { %struct.function* }
+	%struct.tree_node = type { %struct.tree_decl }
+	%struct.u = type { [1 x %struct.rtunion] }
+	%struct.var_refs_queue = type { %struct.rtx_def*, i32, i32, %struct.var_refs_queue* }
+	%struct.varasm_status = type opaque
+	%struct.varray_data = type { [1 x i64] }
+	%struct.varray_head_tag = type { i64, i64, i32, i8*, %struct.varray_data }
+	%union.tree_ann_d = type opaque
+
+define void @layout_type(%struct.tree_node* %type) {
+entry:
+	%tmp32 = load i32* null, align 8		; <i32> [#uses=3]
+	%tmp3435 = trunc i32 %tmp32 to i8		; <i8> [#uses=1]
+	%tmp53 = icmp eq %struct.tree_node* null, null		; <i1> [#uses=1]
+	br i1 %tmp53, label %cond_next57, label %UnifiedReturnBlock
+
+cond_next57:		; preds = %entry
+	%tmp65 = and i32 %tmp32, 255		; <i32> [#uses=1]
+	switch i32 %tmp65, label %UnifiedReturnBlock [
+		 i32 6, label %bb140
+		 i32 7, label %bb140
+		 i32 8, label %bb140
+		 i32 13, label %bb478
+	]
+
+bb140:		; preds = %cond_next57, %cond_next57, %cond_next57
+	%tmp219 = load i32* null, align 8		; <i32> [#uses=1]
+	%tmp221222 = trunc i32 %tmp219 to i8		; <i8> [#uses=1]
+	%tmp223 = icmp eq i8 %tmp221222, 24		; <i1> [#uses=1]
+	br i1 %tmp223, label %cond_true226, label %cond_next340
+
+cond_true226:		; preds = %bb140
+	switch i8 %tmp3435, label %cond_true288 [
+		 i8 6, label %cond_next340
+		 i8 9, label %cond_next340
+		 i8 7, label %cond_next340
+		 i8 8, label %cond_next340
+		 i8 10, label %cond_next340
+	]
+
+cond_true288:		; preds = %cond_true226
+	unreachable
+
+cond_next340:		; preds = %cond_true226, %cond_true226, %cond_true226, %cond_true226, %cond_true226, %bb140
+	ret void
+
+bb478:		; preds = %cond_next57
+	br i1 false, label %cond_next500, label %cond_true497
+
+cond_true497:		; preds = %bb478
+	unreachable
+
+cond_next500:		; preds = %bb478
+	%tmp513 = load i32* null, align 8		; <i32> [#uses=1]
+	%tmp545 = and i32 %tmp513, 8192		; <i32> [#uses=1]
+	%tmp547 = and i32 %tmp32, -8193		; <i32> [#uses=1]
+	%tmp548 = or i32 %tmp547, %tmp545		; <i32> [#uses=1]
+	store i32 %tmp548, i32* null, align 8
+	ret void
+
+UnifiedReturnBlock:		; preds = %cond_next57, %entry
+	ret void
+}