Check in LLVM r95781.

1 files changed, 57 insertions, 0 deletions

diff --git a/test/CodeGen/X86/omit-label.ll b/test/CodeGen/X86/omit-label.ll
new file mode 100644
index 0000000..0ec03eb
--- /dev/null
+++ b/test/CodeGen/X86/omit-label.ll
@@ -0,0 +1,57 @@
+; RUN: llc < %s -asm-verbose=false -mtriple=x86_64-linux-gnu | FileCheck %s
+; PR4126
+; PR4732
+
+; Don't omit these labels' definitions.
+
+; CHECK: bux:
+; CHECK: LBB1_1:
+
+define void @bux(i32 %p_53) nounwind optsize {
+entry:
+	%0 = icmp eq i32 %p_53, 0		; <i1> [#uses=1]
+	%1 = icmp sgt i32 %p_53, 0		; <i1> [#uses=1]
+	%or.cond = and i1 %0, %1		; <i1> [#uses=1]
+	br i1 %or.cond, label %bb.i, label %bb3
+
+bb.i:		; preds = %entry
+	%2 = add i32 %p_53, 1		; <i32> [#uses=1]
+	%3 = icmp slt i32 %2, 0		; <i1> [#uses=0]
+	br label %bb3
+
+bb3:		; preds = %bb.i, %entry
+	%4 = tail call i32 (...)* @baz(i32 0) nounwind		; <i32> [#uses=0]
+	ret void
+}
+
+declare i32 @baz(...)
+
+; Don't omit this label in the assembly output.
+; CHECK: int321:
+; CHECK: LBB2_1
+; CHECK: LBB2_1
+; CHECK: LBB2_1:
+
+define void @int321(i8 signext %p_103, i32 %uint8p_104) nounwind readnone {
+entry:
+  %tobool = icmp eq i8 %p_103, 0                  ; <i1> [#uses=1]
+  %cmp.i = icmp sgt i8 %p_103, 0                  ; <i1> [#uses=1]
+  %or.cond = and i1 %tobool, %cmp.i               ; <i1> [#uses=1]
+  br i1 %or.cond, label %land.end.i, label %for.cond.preheader
+
+land.end.i:                                       ; preds = %entry
+  %conv3.i = sext i8 %p_103 to i32                ; <i32> [#uses=1]
+  %div.i = sdiv i32 1, %conv3.i                   ; <i32> [#uses=1]
+  %tobool.i = icmp eq i32 %div.i, -2147483647     ; <i1> [#uses=0]
+  br label %for.cond.preheader
+
+for.cond.preheader:                               ; preds = %land.end.i, %entry
+  %cmp = icmp sgt i8 %p_103, 1                    ; <i1> [#uses=1]
+  br i1 %cmp, label %for.end.split, label %for.cond
+
+for.cond:                                         ; preds = %for.cond.preheader, %for.cond
+  br label %for.cond
+
+for.end.split:                                    ; preds = %for.cond.preheader
+  ret void
+}