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authorJakub Staszak <jstaszak@apple.com>2011-07-06 18:22:43 +0000
committerJakub Staszak <jstaszak@apple.com>2011-07-06 18:22:43 +0000
commit9da9934e27dfb48de77b80a3e20ed2d869b52024 (patch)
tree711368e52d6596eeb3273012758fe07e87213687 /test/CodeGen/Generic
parentd7c7e2ff7d3305e4bc5634902ec4b8406e9cefca (diff)
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Introduce "expect" intrinsic instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134516 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/Generic')
-rw-r--r--test/CodeGen/Generic/builtin-expect.ll223
1 files changed, 223 insertions, 0 deletions
diff --git a/test/CodeGen/Generic/builtin-expect.ll b/test/CodeGen/Generic/builtin-expect.ll
new file mode 100644
index 0000000..e8cd07b
--- /dev/null
+++ b/test/CodeGen/Generic/builtin-expect.ll
@@ -0,0 +1,223 @@
+; RUN: llc < %s
+
+define i32 @test1(i32 %x) nounwind uwtable ssp {
+entry:
+ %retval = alloca i32, align 4
+ %x.addr = alloca i32, align 4
+ store i32 %x, i32* %x.addr, align 4
+ %tmp = load i32* %x.addr, align 4
+ %cmp = icmp sgt i32 %tmp, 1
+ %conv = zext i1 %cmp to i32
+ %conv1 = sext i32 %conv to i64
+ %expval = call i64 @llvm.expect.i64(i64 %conv1, i64 1)
+ %tobool = icmp ne i64 %expval, 0
+ br i1 %tobool, label %if.then, label %if.end
+
+if.then: ; preds = %entry
+ %call = call i32 (...)* @f()
+ store i32 %call, i32* %retval
+ br label %return
+
+if.end: ; preds = %entry
+ store i32 1, i32* %retval
+ br label %return
+
+return: ; preds = %if.end, %if.then
+ %0 = load i32* %retval
+ ret i32 %0
+}
+
+declare i64 @llvm.expect.i64(i64, i64) nounwind readnone
+
+declare i32 @f(...)
+
+define i32 @test2(i32 %x) nounwind uwtable ssp {
+entry:
+ %retval = alloca i32, align 4
+ %x.addr = alloca i32, align 4
+ store i32 %x, i32* %x.addr, align 4
+ %tmp = load i32* %x.addr, align 4
+ %conv = sext i32 %tmp to i64
+ %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1)
+ %tobool = icmp ne i64 %expval, 0
+ br i1 %tobool, label %if.then, label %if.end
+
+if.then: ; preds = %entry
+ %call = call i32 (...)* @f()
+ store i32 %call, i32* %retval
+ br label %return
+
+if.end: ; preds = %entry
+ store i32 1, i32* %retval
+ br label %return
+
+return: ; preds = %if.end, %if.then
+ %0 = load i32* %retval
+ ret i32 %0
+}
+
+define i32 @test3(i32 %x) nounwind uwtable ssp {
+entry:
+ %retval = alloca i32, align 4
+ %x.addr = alloca i32, align 4
+ store i32 %x, i32* %x.addr, align 4
+ %tmp = load i32* %x.addr, align 4
+ %tobool = icmp ne i32 %tmp, 0
+ %lnot = xor i1 %tobool, true
+ %lnot.ext = zext i1 %lnot to i32
+ %conv = sext i32 %lnot.ext to i64
+ %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1)
+ %tobool1 = icmp ne i64 %expval, 0
+ br i1 %tobool1, label %if.then, label %if.end
+
+if.then: ; preds = %entry
+ %call = call i32 (...)* @f()
+ store i32 %call, i32* %retval
+ br label %return
+
+if.end: ; preds = %entry
+ store i32 1, i32* %retval
+ br label %return
+
+return: ; preds = %if.end, %if.then
+ %0 = load i32* %retval
+ ret i32 %0
+}
+
+define i32 @test4(i32 %x) nounwind uwtable ssp {
+entry:
+ %retval = alloca i32, align 4
+ %x.addr = alloca i32, align 4
+ store i32 %x, i32* %x.addr, align 4
+ %tmp = load i32* %x.addr, align 4
+ %tobool = icmp ne i32 %tmp, 0
+ %lnot = xor i1 %tobool, true
+ %lnot1 = xor i1 %lnot, true
+ %lnot.ext = zext i1 %lnot1 to i32
+ %conv = sext i32 %lnot.ext to i64
+ %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1)
+ %tobool2 = icmp ne i64 %expval, 0
+ br i1 %tobool2, label %if.then, label %if.end
+
+if.then: ; preds = %entry
+ %call = call i32 (...)* @f()
+ store i32 %call, i32* %retval
+ br label %return
+
+if.end: ; preds = %entry
+ store i32 1, i32* %retval
+ br label %return
+
+return: ; preds = %if.end, %if.then
+ %0 = load i32* %retval
+ ret i32 %0
+}
+
+define i32 @test5(i32 %x) nounwind uwtable ssp {
+entry:
+ %retval = alloca i32, align 4
+ %x.addr = alloca i32, align 4
+ store i32 %x, i32* %x.addr, align 4
+ %tmp = load i32* %x.addr, align 4
+ %cmp = icmp slt i32 %tmp, 0
+ %conv = zext i1 %cmp to i32
+ %conv1 = sext i32 %conv to i64
+ %expval = call i64 @llvm.expect.i64(i64 %conv1, i64 0)
+ %tobool = icmp ne i64 %expval, 0
+ br i1 %tobool, label %if.then, label %if.end
+
+if.then: ; preds = %entry
+ %call = call i32 (...)* @f()
+ store i32 %call, i32* %retval
+ br label %return
+
+if.end: ; preds = %entry
+ store i32 1, i32* %retval
+ br label %return
+
+return: ; preds = %if.end, %if.then
+ %0 = load i32* %retval
+ ret i32 %0
+}
+
+define i32 @test6(i32 %x) nounwind uwtable ssp {
+entry:
+ %retval = alloca i32, align 4
+ %x.addr = alloca i32, align 4
+ store i32 %x, i32* %x.addr, align 4
+ %tmp = load i32* %x.addr, align 4
+ %conv = sext i32 %tmp to i64
+ %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1)
+ switch i64 %expval, label %sw.epilog [
+ i64 1, label %sw.bb
+ i64 2, label %sw.bb
+ ]
+
+sw.bb: ; preds = %entry, %entry
+ store i32 0, i32* %retval
+ br label %return
+
+sw.epilog: ; preds = %entry
+ store i32 1, i32* %retval
+ br label %return
+
+return: ; preds = %sw.epilog, %sw.bb
+ %0 = load i32* %retval
+ ret i32 %0
+}
+
+define i32 @test7(i32 %x) nounwind uwtable ssp {
+entry:
+ %retval = alloca i32, align 4
+ %x.addr = alloca i32, align 4
+ store i32 %x, i32* %x.addr, align 4
+ %tmp = load i32* %x.addr, align 4
+ %conv = sext i32 %tmp to i64
+ %expval = call i64 @llvm.expect.i64(i64 %conv, i64 1)
+ switch i64 %expval, label %sw.epilog [
+ i64 2, label %sw.bb
+ i64 3, label %sw.bb
+ ]
+
+sw.bb: ; preds = %entry, %entry
+ %tmp1 = load i32* %x.addr, align 4
+ store i32 %tmp1, i32* %retval
+ br label %return
+
+sw.epilog: ; preds = %entry
+ store i32 0, i32* %retval
+ br label %return
+
+return: ; preds = %sw.epilog, %sw.bb
+ %0 = load i32* %retval
+ ret i32 %0
+}
+
+define i32 @test8(i32 %x) nounwind uwtable ssp {
+entry:
+ %retval = alloca i32, align 4
+ %x.addr = alloca i32, align 4
+ store i32 %x, i32* %x.addr, align 4
+ %tmp = load i32* %x.addr, align 4
+ %cmp = icmp sgt i32 %tmp, 1
+ %conv = zext i1 %cmp to i32
+ %expval = call i32 @llvm.expect.i32(i32 %conv, i32 1)
+ %tobool = icmp ne i32 %expval, 0
+ br i1 %tobool, label %if.then, label %if.end
+
+if.then: ; preds = %entry
+ %call = call i32 (...)* @f()
+ store i32 %call, i32* %retval
+ br label %return
+
+if.end: ; preds = %entry
+ store i32 1, i32* %retval
+ br label %return
+
+return: ; preds = %if.end, %if.then
+ %0 = load i32* %retval
+ ret i32 %0
+}
+
+declare i32 @llvm.expect.i32(i32, i32) nounwind readnone
+