-%AConst = constant int 123
+; RUN: llc < %s
-implementation
+%Domain = type { i8*, i32, i32*, i32, i32, i32*, %Domain* }
+@AConst = constant i32 123 ; <i32*> [#uses=1]
; Test setting values of different constants in registers.
;
-void "testConsts"(int %N, float %X)
-begin
-; <label>:0
- %a = add int %N, 1 ; 1 should be put in immed field
- %a2= add int %N, 12345678 ; constant has to be loaded
- %b = add short 4, 3 ; one of the operands shd be immed
- %c = add float %X, 0.0 ; will this be optimzzed?
- %d = add float %X, 3.1415 ; constant has to be loaded
- %f = add uint 4294967295, 10 ; result shd be 9 (not in immed fld)
- %g = add ushort 20, 65535 ; result shd be 19 (65536 in immed fld)
- %g = add ushort 65535, 30 ; result shd be 29 (not in immed fld)
- %h = add ubyte 40, 255 ; result shd be 39 (255 in immed fld)
- %h = add ubyte 255, 50 ; result shd be 49 (not in immed fld)
-
- ret void
-end
+define void @testConsts(i32 %N, float %X) {
+ %a = add i32 %N, 1 ; <i32> [#uses=0]
+ %i = add i32 %N, 12345678 ; <i32> [#uses=0]
+ %b = add i16 4, 3 ; <i16> [#uses=0]
+ %c = fadd float %X, 0.000000e+00 ; <float> [#uses=0]
+ %d = fadd float %X, 0x400921CAC0000000 ; <float> [#uses=0]
+ %f = add i32 -1, 10 ; <i32> [#uses=0]
+ %g = add i16 20, -1 ; <i16> [#uses=0]
+ %j = add i16 -1, 30 ; <i16> [#uses=0]
+ %h = add i8 40, -1 ; <i8> [#uses=0]
+ %k = add i8 -1, 50 ; <i8> [#uses=0]
+ ret void
+}
; A SetCC whose result is used should produce instructions to
; compute the boolean value in a register. One whose result
; is unused will only generate the condition code but not
; the boolean result.
;
-void "unusedBool"(int * %x, int * %y)
-begin
-; <label>:0 ; [#uses=0]
- seteq int * %x, %y ; <bool>:0 [#uses=1]
- not bool %0 ; <bool>:1 [#uses=0]
- setne int * %x, %y ; <bool>:2 [#uses=0]
- ret void
-end
+define void @unusedBool(i32* %x, i32* %y) {
+ icmp eq i32* %x, %y ; <i1>:1 [#uses=1]
+ xor i1 %1, true ; <i1>:2 [#uses=0]
+ icmp ne i32* %x, %y ; <i1>:3 [#uses=0]
+ ret void
+}
; A constant argument to a Phi produces a Cast instruction in the
; corresponding predecessor basic block. This checks a few things:
; -- use of immediate fields for integral constants of different sizes
; -- branch on a constant condition
;
-void "mergeConstants"(int * %x, int * %y)
-begin
+define void @mergeConstants(i32* %x, i32* %y) {
; <label>:0
- br label %Top
-Top:
- phi int [ 0, %0 ], [ 1, %Top ], [ 524288, %Next ]
- phi float [ 0.0, %0 ], [ 1.0, %Top ], [ 2.0, %Next ]
- phi double [ 0.5, %0 ], [ 1.5, %Top ], [ 2.5, %Next ]
- phi bool [ true, %0 ], [ false,%Top ], [ true, %Next ]
- br bool true, label %Top, label %Next
-Next:
- br label %Top
-end
+ br label %Top
+
+Top: ; preds = %Next, %Top, %0
+ phi i32 [ 0, %0 ], [ 1, %Top ], [ 524288, %Next ] ; <i32>:1 [#uses=0]
+ phi float [ 0.000000e+00, %0 ], [ 1.000000e+00, %Top ], [ 2.000000e+00, %Next ] ; <float>:2 [#uses=0]
+ phi double [ 5.000000e-01, %0 ], [ 1.500000e+00, %Top ], [ 2.500000e+00, %Next ]
+ phi i1 [ true, %0 ], [ false, %Top ], [ true, %Next ] ; <i1>:4 [#uses=0]
+ br i1 true, label %Top, label %Next
+
+Next: ; preds = %Top
+ br label %Top
+}
; use but has to be loaded into a virtual register so that the reg.
; allocator can allocate the appropriate phys. reg. for it
;
-int* "castconst"(float)
-begin
-; <label>:0
- %castbig = cast ulong 99999999 to int
- %castsmall = cast ulong 1 to int
- %usebig = add int %castbig, %castsmall
-
- %castglob = cast int* %AConst to long*
- %dummyl = load long* %castglob
-
- %castnull = cast ulong 0 to int*
- ret int* %castnull
-end
-
-
+define i32* @castconst(float) {
+ %castbig = trunc i64 99999999 to i32 ; <i32> [#uses=1]
+ %castsmall = trunc i64 1 to i32 ; <i32> [#uses=1]
+ %usebig = add i32 %castbig, %castsmall ; <i32> [#uses=0]
+ %castglob = bitcast i32* @AConst to i64* ; <i64*> [#uses=1]
+ %dummyl = load i64, i64* %castglob ; <i64> [#uses=0]
+ %castnull = inttoptr i64 0 to i32* ; <i32*> [#uses=1]
+ ret i32* %castnull
+}
; Test branch-on-comparison-with-zero, in two ways:
; 1. can be folded
; 2. cannot be folded because result of comparison is used twice
;
-void "testbool"(int, int) ; Def %0, %1
- const int 0 ; Def 2
- const int -4 ; Def 3
-begin
-; <label>:0
- br label %Top
-Top:
- add int %0, %1 ; Def 4
- sub int %4, %3 ; Def 5
- setle int %5, %2 ; Def 0 - bool plane
- br bool %0, label %retlbl, label %loop
-
-loop:
- add int %0, %1 ; Def 6
- sub int %4, %3 ; Def 7
- setle int %7, %2 ; Def 1 - bool
- not bool %1 ; Def 2 - bool. first use of bool %1
- br bool %1, label %loop, label %Top ; second use of bool %1
-
-retlbl:
- ret void
-end
-
+define void @testbool(i32 %A, i32 %B) {
+ br label %Top
+
+Top: ; preds = %loop, %0
+ %D = add i32 %A, %B ; <i32> [#uses=2]
+ %E = sub i32 %D, -4 ; <i32> [#uses=1]
+ %C = icmp sle i32 %E, 0 ; <i1> [#uses=1]
+ br i1 %C, label %retlbl, label %loop
+
+loop: ; preds = %loop, %Top
+ %F = add i32 %A, %B ; <i32> [#uses=0]
+ %G = sub i32 %D, -4 ; <i32> [#uses=1]
+ %D.upgrd.1 = icmp sle i32 %G, 0 ; <i1> [#uses=1]
+ %E.upgrd.2 = xor i1 %D.upgrd.1, true ; <i1> [#uses=1]
+ br i1 %E.upgrd.2, label %loop, label %Top
+
+retlbl: ; preds = %Top
+ ret void
+}
+
+
+;; Test use of a boolean result in cast operations.
+;; Requires converting a condition code result into a 0/1 value in a reg.
+;;
+define i32 @castbool(i32 %A, i32 %B) {
+bb0:
+ %cond213 = icmp slt i32 %A, %B ; <i1> [#uses=1]
+ %cast110 = zext i1 %cond213 to i8 ; <i8> [#uses=1]
+ %cast109 = zext i8 %cast110 to i32 ; <i32> [#uses=1]
+ ret i32 %cast109
+}
+
+;; Test use of a boolean result in arithmetic and logical operations.
+;; Requires converting a condition code result into a 0/1 value in a reg.
+;;
+define i1 @boolexpr(i1 %b, i32 %N) {
+ %b2 = icmp sge i32 %N, 0 ; <i1> [#uses=1]
+ %b3 = and i1 %b, %b2 ; <i1> [#uses=1]
+ ret i1 %b3
+}
; Test branch on floating point comparison
;
-void "testfloatbool"(float %x, float %y) ; Def %0, %1 - float
-begin
-; <label>:0
- br label %Top
-Top:
- %p = add float %x, %y ; Def 2 - float
- %z = sub float %x, %y ; Def 3 - float
- %b = setle float %p, %z ; Def 0 - bool
- %c = not bool %b ; Def 1 - bool
- br bool %b, label %Top, label %goon
-goon:
- ret void
-end
+define void @testfloatbool(float %x, float %y) {
+ br label %Top
+
+Top: ; preds = %Top, %0
+ %p = fadd float %x, %y ; <float> [#uses=1]
+ %z = fsub float %x, %y ; <float> [#uses=1]
+ %b = fcmp ole float %p, %z ; <i1> [#uses=2]
+ %c = xor i1 %b, true ; <i1> [#uses=0]
+ br i1 %b, label %Top, label %goon
+
+goon: ; preds = %Top
+ ret void
+}
; Test cases where an LLVM instruction requires no machine
; copy instruction (add-with-0), but this copy should get coalesced
; away by the register allocator.
;
-int "checkForward"(int %N, int* %A)
-begin
-
-bb2: ;;<label>
- %reg114 = shl int %N, ubyte 2 ;;
- %cast115 = cast int %reg114 to int* ;; reg114 will be propagated
- %reg116 = add int* %A, %cast115 ;;
- %reg118 = load int* %reg116 ;;
- %cast117 = cast int %reg118 to long ;; reg118 will be copied 'cos
- %reg159 = add long 1234567, %cast117 ;; cast117 has 2 uses, here
- %reg160 = add long 7654321, %cast117 ;; and here.
- ret void
-end
+define i32 @checkForward(i32 %N, i32* %A) {
+bb2:
+ %reg114 = shl i32 %N, 2 ; <i32> [#uses=1]
+ %cast115 = sext i32 %reg114 to i64 ; <i64> [#uses=1]
+ %cast116 = ptrtoint i32* %A to i64 ; <i64> [#uses=1]
+ %reg116 = add i64 %cast116, %cast115 ; <i64> [#uses=1]
+ %castPtr = inttoptr i64 %reg116 to i32* ; <i32*> [#uses=1]
+ %reg118 = load i32, i32* %castPtr ; <i32> [#uses=1]
+ %cast117 = sext i32 %reg118 to i64 ; <i64> [#uses=2]
+ %reg159 = add i64 1234567, %cast117 ; <i64> [#uses=0]
+ %reg160 = add i64 7654321, %cast117 ; <i64> [#uses=0]
+ ret i32 0
+}
+
+
+; Test case for unary NOT operation constructed from XOR.
+;
+define void @checkNot(i1 %b, i32 %i) {
+ %notB = xor i1 %b, true ; <i1> [#uses=1]
+ %notI = xor i32 %i, -1 ; <i32> [#uses=2]
+ %F = icmp sge i32 %notI, 100 ; <i1> [#uses=1]
+ %J = add i32 %i, %i ; <i32> [#uses=1]
+ %andNotB = and i1 %F, %notB ; <i1> [#uses=0]
+ %andNotI = and i32 %J, %notI ; <i32> [#uses=0]
+ %notB2 = xor i1 true, %b ; <i1> [#uses=0]
+ %notI2 = xor i32 -1, %i ; <i32> [#uses=0]
+ ret void
+}
+
+; Test case for folding getelementptr into a load/store
+;
+define i32 @checkFoldGEP(%Domain* %D, i64 %idx) {
+ %reg841 = getelementptr %Domain, %Domain* %D, i64 0, i32 1 ; <i32*> [#uses=1]
+ %reg820 = load i32, i32* %reg841 ; <i32> [#uses=1]
+ ret i32 %reg820
+}
+
+; Test case for scalarising a 1 element vselect
+;
+define <1 x i32> @checkScalariseVSELECT(<1 x i32> %a, <1 x i32> %b) {
+ %cond = icmp uge <1 x i32> %a, %b
+ %s = select <1 x i1> %cond, <1 x i32> %a, <1 x i32> %b
+ ret <1 x i32> %s
+}
projects / oota-llvm.git / blobdiff